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DIAGNOSIS Chose a topic in this section: Criteria Differential Diagnosis Common Symptoms of & Responses to Trauma Other Mental Disorders Associated with Trauma Criteria: According to the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition, Text Revision (DSM-IV-TR), an individual needs to meet these criteria (A-F) to qualify for a diagnosis of PTSD: A. The individual was exposed to a traumatic event in which both of the following were present: (1) the person experienced, witnessed, or was confronted with an event or events that involved actual or threatened death or serious injury, or a threat to the physical integrity of self or others (2) the person's response involved intense fear, helplessness, or horror. Note: In children, this may be expressed instead by disorganized or agitated behavior. B. The traumatic event is persistently reexperienced in one (or more) of the following ways: (1) recurrent and intrusive distressing recollections of the event, including images, thoughts, or perceptions. (2) recurrent distressing dreams of the event (3) acting or feeling as if the traumatic event were recurring (illusions, hallucinations, dissociative flashbacks, sense of reliving) (4) intense psychological distress at exposure to internal and external cues that symbolize or resemble an aspect of the trauma (5) physiological reactivity on exposure to internal and external cues that symbolize or resemble an aspect of the trauma C. Persistent avoidance of stimuli associated with the trauma and numbing of general responsiveness (not present before trauma), as indicated by 3 of the following: (1) efforts to avoid thoughts, feelings, or conversations associated with the trauma (2) efforts to avoid activities, places, or people that arouse recollections of the trauma (3) inability to recall an important aspect of the trauma (4) markedly diminished interest or participation in significant activities (5) feeling of detachment or estrangement from others (6) restricted range of affect (e.g., unable to having loving feelings) (7) sense of foreshortened future (e.g., does not expect to have a career, marriage, children, or normal life span) D. Persistent symptoms of increased arousal (not present before trauma), as indicated by 2 or more of the following: (1) difficulty falling or staying asleep (2) irritability or outbursts of anger (3) difficulty concentrating (4) hypervigilance (5) exaggerated startle response E. Duration of the disturbance (Criteria B, C, D) is more than 1 month. F. The disturbance causes clinically significant distress or impairment in social, occupational, or other important areas. Specifiers: »Specifiers allow clinicians to define more uniform groups within the disorder based on certain features Acute: if duration of symptoms is less than 3 months Chronic: if duration of symptoms is 3 months or more With Delayed Onset: if onset of symptoms is at least 6 months after the stressor Above is adapted from DSM-IV-TR (p. 467-468). Differential Diagnosis: » If it is unclear which diagnosis is appropriate, this section may help you discern which is more appropriate. ●PTSD vs. Adjustment Disorder ●PTSD vs. Acute Stress Disorder ●PTSD vs. Malingering Symptoms & Responses to Trauma (Briere, 2004, DSM-IV-TR, 2000) Posttraumatic Symptoms ● Intrusive experiences including flashbacks, nightmares, unwanted thoughts or memories, and reliving sensations ● Avoidance of thinking about or associating with stimuli that remind the victim of the trauma, emotional numbing ● Increased arousal demonstrated by decreased or poor sleep, muscle tension, irritability, difficutly concentrating, and abnormal startle response Dissociative Symptoms ● Depersonalization (a feeling of detachment from one's self or body) ● Derealization (a feeling of a lost sense of or detachment from reality) ● Fugue state (sudden, unexpected travel away from one's home with loss of memory of some/all of one's personal history) ● "Spacing out" ● Amnesia (memory loss) ● Identity confusion Physical Symptoms ● Motor/Sensory reactions (e.g., paralysis, blindness) ● Psychogenic pain (pain originating from a psychological source) Sexual Symptoms (especially relevant if trauma is sexual in nature) ● Sexual distress (including sexual dysfunction) ● Sexual fears Cognitive Symptoms ● Low self-esteem ● Helplessness/hopelessness ● Inflated perception of danger ● Irrational guilt Common Activities Used to Decrease Distress from Trauma ● Binging-Purging ● Reckless sexual behavior ● Self-mutilation ● Compulsive stealing ● Aggression Other Mental Disorders Associated with Trauma (Briere, 2004, DSM-IVTR, 2000) Conversion Disorder - This disorder involves the presence of sensory and/or motor function symptoms that appear to be biological in nature. Closer examination reveals that these deficits are due to psychological factors. These symptoms are often created or worsened by trauma, usually extreme in nature (combat experience, losing a loved one) Somatization Disorder - This disorder consists of a host of bodily symptoms of varying nature that cannot be fully explained biologically. Specifically, a person with this disorder must possess at least: four pain symptoms, two gastrointestinal symptoms, one sexual symptom, and one pseudoneurological symptom (e.g., paralysis). This disorder is often the product of repeated childhood abuse, especially of the sexual nature. The link between trauma and psychologically manifested physical symptoms is unclear, though possibly a result of the chronic autonomic arousal involved in multiple traumas. Major Depressive Disorder (with Psychotic features) - This disorder is characterized by a depressed mood, loss of interest in activities, and several other adverse symptoms. In addition,psychotic hallucinations (perceptual disturbances) or delusions (false beliefs) are also present. Depressive symptoms often accompany the distressing aftermath of a trauma as the individual copes with prevelant posttraumatic symptoms (reexperiencing, increased arousal, avoidance). The psychotic features are thought to be associated with the dissociative effects of the trauma that strain the person's link with reality. Panic Disorder - Recurrent, unexpected panic attacks are a necessary feature of this disorder as well as continual worry about additional attacks or the consequences of such attacks. This disorder is most clearly associated with the hyperarousal symptoms involved in PTSD. In their study of the relationship between panic and trauma, Falsetti and Resnick (1997) discovered that 69% of those seeking treatment for trauma symptomology reported trauma-focused panic attacks. Borderline Personality Disorder - Described as a profound "pattern of instability of interpersonal relationships, self-image, and affects, and marked implusivity", this disorder is traditionally thought to have its origins in childhood. It is believed that the rewarding of dependent behaviors and punishing of independent behaviors during development often leads to this skewed sense of self and relations to others. Extreme childhood trauma (e.g., neglect, abuse) retards the development process and distorts the child's ability to relate to self and others. LINKS National Center for PTSD http://www.ncptsd.va.gov/ The National Center for PTSD was created within the Department of Veterans Affairs in 1989, in response to a Congressional mandate to address the needs of veterans with military-related PTSD. PTSD Alliance http://www.ptsdalliance.org/home2.html The PTSD Alliance is a group of professional and advocacy organizations that have joined forces to provide educational resources to individuals diagnosed with PTSD and their loved ones. The International Society for Traumatic Stress Studies http://www.istss.org/ ISTSS is an international multidisciplinary, professional membership organization that promotes advancement and exchange of knowledge about severe stress and trauma. US Department of Veterans Affairs http://www.va.gov/ The VA is the parent organization of the National Center for PTSD. Its Web site provides a wide range of information on veterans' benefits and treatment facilities. Trauma Info Pages http://www.trauma-pages.com/ David Baldwin's listing of Web resources on clinical and research aspects of trauma responses and their resolution. Sidran http://www.sidran.org/survivor.html The Sidran Institute is considered to be a leader in traumatic stress education and advocacy. It is a nationally-focused nonprofit organization devoted to helping people who have experienced traumatic life events. National Child Traumatic Stress Network http://www.nctsnet.org/nccts/nav.do?pid=hom_main The NCTSN was established to improve access to care, treatment, and services for children and adolescents exposed to traumatic events and to encourage and promote collaboration between providers in the field. National Institute of Mental Health http://www.nimh.nih.gov/ A wide array of information about mental health issues, for the public, clinicians, and researchers. RISK FACTORS Not all trauma survivors develop PTSD. As a result, much attention has been paid to the factors that make a person vulnerable to (or protect them from) developing this disorder (Wohlfarth, 2002). Further assessment of risk factors for PTSD will aid its prevention. Who's at Risk? Risk Factors Statistics Risk for PTSD In reality, anyone can develop PTSD. The most reliable predictor of PTSD's onset is a triggering event, or trauma. As defined by DSM-IV-TR criteria, a traumatic event is necessary for the diagnosis of PTSD (DSM-IV-TR, 2000). One study reports that 40% of Americans have experienced at least one major trauma in their lifetimes and that 8-12% of Americans will suffer from PTSD at some point (Breslau et al., 1991). That means that approxiamately one-quarter of those who experience a severe trauma will subsequently develop PTSD. The National Comorbidity Survery (NCS), a more comprehensive study, found that 56% of Americans experience a lifetime trauma while only 8% develop PTSD (Perkonigg et al., 2000). Futhermore, many other studies have found variable rates of trauma and PTSD in the population, likely due to the variation among defining criteria. The prevailing message of these studies is that although PTSD only manifests in a portion of trauma victims, its overall prevelance is great enough to warrant significant attention. Anyone who has been victimized or has witnessed a violent act or who has been repeatedly exposed to a life-threatening situation. Survivors of:: ● domestic violence ● rape, sexual assault/abuse ● physical assault ● other random violent acts in public (at work, school) Survivors of unexpected events in everyday life: ● car accidents ● natural disasters ● major catastrophic event (e.g., terrorist attack, plane crash) ● disasters caused by human error (e.g., industrial accidents) ● Children who are neglected or sexually, physically or verbally abused or adults who were abused as children ● Combat veterans or civilian victims of war ● Those diagnosed with a life-threatening illness or who have had major medical procedures ● Professionals who respond to victims in trauma situations such as emergency medical service workers, police, and military ● Those who learn of the sudden, unexpected death of a close friend or relative These conditions could apply to anyone at certain points in our lives, making PTSD an unpredictibly common source of distress (Schiraldi, 2000). Risk Factors Nature of Trauma A victim's vulnerability to PTSD increases if the trauma is: ● sudden, unpredicted ● enduring ● recurring ● pose a real threat of harm ● are multidimensional (pose harm in multiple ways, e.g., natural disaster followed by drought) ● occur early in life (trauma has a more profound effect on a developing personality) In addition, three broad temporally-related risk categories have been proposed : Pre-Trauma, At-Trauma, & Post-Trauma Pre-Trauma Factors Individual-related History of Trauma - Prior trauma, especially where PTSD developed, makes individuals especially succeptable to repeated bouts with PTSD. This is likely due to the ease with which unresolved past traumas are recalled and reexperienced, as well as the likelihood of reenacting past faulty coping behaviors (Schiraldi, 2000). Life Stressors - Recent events in a person's life that are not of traumatic magnitude (e.g., job loss, divorce, financial problems) can weaken the person's defenses against trauma-induced stress in the same way that hardship can weaken the immune system. Poor Coping Skills - Deficits such as low self-esteem, emotionality, and resilience can increase a person's chance of developing PTSD. The advantage of this set of vulnerability factors is that they are all learnable. In fact, suffering through PTSD can actually promote improvement of these deficits (Schiraldi, 2000). Personality - Certain long-standing traits, such as pessimism and introversion, deny a person the tools needed to deal with a challenging affliction such such as PTSD. These, too, are modifiable, but not to the same degree as coping skills (Schiraldi, 2000). Genetics - It appears that vulnerability to PTSD can be passed on through generations, and worsened by certain behaviors such as drug abuse and trauma experience (Schiraldi, 2000) Brain Structure - The hippocampus, which plays a role in learning and memory, has been shown to be damaged in PTSD sufferers (Durand, 2006). Similarly, research on rodents and primates indicates that stressful stimuli can induce adverse functional and structural changes in the hippocampus. Decreased hippocampal volume results when excessive stress alters the chemical regulation in the brain, which harms the functionality of systems such as learning and memory. The chemicals implicated in this structure mutation include glutamate, GABA, norepinephrine, serotonin, and cortisol. A host of other chemicals and structures are thought to play a role in PTSD (Nutt, 2000). Pathway Dysregulation - The dysregulation of GABA & glutamatergic pathways is implicated in development and maintenance of PTSD. These two amino acids (GABA, glutamate) work in tandem to translate experience and stimuli into memory. Extreme stress can advesely affect these pathways, eventually causing long-term synaptic changes that leads to abnormal, often excessive, encoding of memory. In essence, memories can become deeply ingrained when these pathways are overstimulated by stress. This mechanism helps to explain the re-experiencing (e.g, flashbacks) symptoms of PTSD (Nutt, 2000). These flashbacks serve as retraumatization, submitting the victim of the intial trauma to repeated experiences that can be just as distressing as the original (McFarlane, 2000). Gender - Gender is an especially important and well researched risk factor for PTSD. According to a recent study, men report having experienced more traumatic events in their lives, but women have a higher prevelance of PTSD (Perkonigg et al., 2000). A similar study found , indeed, that men are exposed to more traumas throughout life, except for sexual violence, to which women are more prone. This exception is significant, as sexual traumas bring about PTSD at the highest rates (Kimerling et al., 2002). Although men experience more traumas, women's subjective experience of trauma is usually more threatening than that of men. Hence, trauma exposure differences amongst genders is similar once subjective elements are considered. In addition, not only are women twice as likely to develop PTSD in their lives but the disorder's course in women tends to be more chronic. This chronicity is not accounted for by the different nature of traumas that women experience. Lastly, it is likely that male's risk for PTSD catches up with women's in setting that are chronically affected by war or violence (Kimerling et al., 2002). Family-related A healthy family setting can provide a child with good protection from PTSD. In family dynamics, the child can learn effective coping strategies, develop self-confidence, and most importantly, establish a solid, loving support system to protect them. Often learning through rolemodeling, a child of a divorced family may witness behaviors and thoughts that are detrimental to their mental health (mistrust, blaming of others) (Schiraldi, 2000). Family History - A family history of anxiety can predispose an individual to PTSD, which itself is an anxiety disorder (Durand, 2006). Likewise, a family history of PTSD and trauma may predispose family members to the disorder. Often, parents who have been trauma victims will teach their children maladaptive methods of coping with these stressors. These parents might also be emotionally unsupportive as a result of their distressing experiences, leaving their children with a lack of support which predisposes them to PTSD. At-Trauma Factors A traumatic event is more likely to adversly affect the victim if, in the initial period following the event, he or she (1) dissociates, (2) believes that they are responsible in some way or did not do all they could to remedy the situation as it occured, and (3) feels alone or isolated. Each of these conditions creates artificial separation from or unnecessary shame in regards to the event (Schiraldi, 2000). Severity of Trauma - With low-level stress or trauma, personal vulnerabilities weigh more heavily in determining the development of PTSD (Durand, 2006) Also, more severe traumas tend to lead to PTSD more often and result in more chronic cases. Proximity to Trauma - A person's proximity to a trauma has been found to be directly related to their degree of resulting distress and PTSD development. An interesting demonstration of this phenomenon was found in the 1987 study of children at an Los Angeles elementary school who survived a sniper shooting at their playground. The closer the children were to the playground (where the bullets were fired, some were killed, and many were injured), the higher their reported stress reaction scores and incidence and severity of PTSD were (Pynoos et al., 1987). Type of Trauma - Trauma type interacts with various other factors (e.g., age, gender, trauma severity) to reveal differing susceptibilities to PTSD per type. See the bottom of this page for specific probabilities of PTSD associated with certain traumas. Post-Trauma Factors Lack of social support - The most crucial protective factor from PTSD after a trauma is the ability to rely on family, friends, and community to prevent isolation and distract the victim from the traumatic memories. Often others are unavailable because they too experienced the trauma or perhaps because of their lack of connection with their own emotions. Seemingly supportive individuals sometimes make the victim feel that they should "just get over it" (Briere, 2004) Blaming the Victim - For whatever reason, some victims of trauma (most notably rape victims) are shamed or disbelieved in regard to the occurence of the event. This rejection serves only to compound the distress of the victim. Another prime example of this was the reception of Vietnam veterans after the war. On top of the "shell shock" they were struggling with, the soldiers had to deal with a public disapproving of the war for which they sacrificed (Schiraldi, 2000). Secondary Victimization - This occurs when those who are supposed to help victims in the posttraumatic period actually worsen the stress by subtly blaming the victim. An example is when police officers might ask a rape victim if she thinks the crime could have been prevented had she worn less revealing clothes (Schiraldi, 2000). Lack of Treatment - Whether intentional or ignorant, not seeking treatment further isolates the victim and allows PTSD to progress chronically. The most effective, empircally-based treatment is currently Cognitive Behavioral therapy, specifically exposure therapy. Progressively and safely reexposing the victim to aspects of the trauma can associate new, positive memories with the event (Schiraldi, 2000). Current research estimates that only 38% of PTSD sufferers are undergoing treatment during a given year. The most popular reason for not seeking treatment was that they did not think they had a problem. This treatment rate, however, is comprable to or higher than the same rates of treatment for depression and anxiety related disorders (Kessler, 2000). ●Wohlfarth et al. are working to develop a reliable assessment tool that can identify victims at high risk for PTSD. They are focusing not just on the risk factors involved, but how predictive each of these factors is in the subsequent onset of PTSD. They hope that this instrument can be used to connect those at high risk for PTSD with treatment/psychoeducation services soon after the trauma. Statistics ● Estimates of adults in the US that have experienced a traumatic event at least once in their lives range from 40-90% (depending on the definition of trauma), and up to 20% of these people go on to develop PTSD (Perkonigg et al., 2000. ● An estimated 5% of Americans – more than 13 million people – have PTSD at any given time. ● Approximately 8% of all adults – one of 13 people in this country – will develop PTSD during their lifetime (DSM-IV-TR). This qualifies PTSD as the most prevelant anxiety disorder in the general population (Ballenger et al., 2000). These lifetime prevelances vary greatly, from 1-30%, depending on the trauma type and exposure (Wilson & Keane, 2004). ● An estimated one out of 10 women will get PTSD at some time in their lives. Women are about twice as likely as men to develop PTSD. This may be due to the fact that women tend to experience interpersonal violence (such as domestic violence or rape) more often than men. ● Almost 13% of men and 10% of women have experienced more than three traumatic events in their lives (Kessler et al., 1995). ● The estimated risk for developing PTSD for people who have experienced the following traumatic events is: →Rape (49%) →Physical Assault (32%) →Other sexual assault (24%) →Serious accident or injuiry (17%) →Shooting/Stabbing (15%) →Unexpected death of relative/friend (14%) →Child's life-threatening illness (10%) →Witness killing/serious injury (7%) →Natural disaster (4%) (Perkonigg et al., 2000, Kessler et al., 1995, Ballenger et al., 2000) DESCRIPTION Basic Overview Associated Features Diagnostic Criteria Basic Overview Trauma is the prerequisite to Posttraumatic Stress Disorder (PTSD). This trauma can be of varying nature and intensity. Personal and situational vulnerabilities mix with situational factors to produce this trauma. Many more personal and trauma-related factors again determine the probability of a trauma victim developing PTSD. A relatively small percentage (absolute highest estimate is 25%) of people actually develop PTSD after a trauma, but this percentage varies across trauma type, gender, and many other variables. It is crucial to further elucidate all the relationships in this causal pathway to aid with prevention and treatment of this debilitating disorder. The three prominent symptoms of PTSD are heightened arousal, reexperiencing of the traumatic event, and avoidance or emotional numbing. These symptoms must cause significant distress or impairment to the individual for a period of no less than one month. A similar combination of symptoms that are experienced for less than 1 month is diagnosed as Acute Stress Disorder. The alarm reaction, arousal, in PTSD is similar to that of panic disorder (Panic Attacks). However, the initial alarm in PTSD is accurate (trauma is present), but subsequent alarms are not (trauma absent). If the alarm is strong enough, it can become a conditioned response to stimuli that triggers it. Rexperiencing of traumatic event(s) takes place in a number of ways. Most commonly, individuals experience intrusive 'flashbacks" in which they truly feel that the event is recurring and they experience similar physical and psychological reactions to this recurrence. It is important to note that these flashbacks can propogate the distress of PTSD by keeping the trauma current in the victim's mind. The avoidance and emotional numbing that accompanies PTSD is often the factor that induces the most social isolation and occupational impairment. Thoughts and feelings associated with the trauma are avoided. Emotional detachment follows in the progression, and can be accompanied by memory loss and hopelessness. PTSD is become an increasingly treatable disorder as the popular cognitive-behavioral therapies advance. Further education is needed to support prevention and treatment in those that are vulnerable. Associated Features: (1) Self-recrimination (2) Shattered assumptions (3) Mood disturbances -Depression -Anxiety -Anger -Grief (4) Addictions (5) Impulsivity (6) Physical complaints (7) Overcompensations (8) Death anxiety (9) Repitition compulsion (10) Self-mutilation (11) Alexithymia This refers to the absence of feeling that can accompany PTSD. (12) Personality changes (Schiraldi, 2000) "The aim of treating PTSD is to enable patients to live in the present with freedom from feelings or behaviors that belong in the past." ~David J. Nutt Typical Course: Horowitz proposed a typical course that PTSD runs from traumatic stress reaction to recovery. (1) Outcry - This initial stage is the most emotionally intense, involving distressing emotions that often become overwhelming. The initial shock of the trauma characterizes this stage. The strong emotions might begin to have a healing effect here. (2) Avoidance/Denial - This stage involves withdrawal and emotional numbing. The victim does not want to believe that the trauma occured and compulsively tries to reassimilate with their pre-trauma existence. Feeling flat, the victim often turns to drugs for relief. (3) Intrusions - Intense emotions and thoughts that are reminiscent of the trauma begin to creep back into consciousness, as indicated by the person's heightened arousal. Reexperiencing also occurs in this phase. The arousal tends to fluctuate as the victim struggles to accept their plight. (4) Work to Completion - This phase involves an emotional and cognitive reintegration with reality. Acceptance of the trauma and its consequences build and equilibrium is restored. All too often, victims get stuck in a stage, leading to a chronic experience of PTSD. In this case, treatment is especially beneficial (Schiraldi, 2000). Prognosis: Outcome is most promising when certain conditions are experienced: ● Less severe trauma ● Early intervention ● Strong social support ● Trauma not experienced up close ● Trauma had relative short duration, minimal recurrence ● No personal/family history of PTSD or associated disorders ● Victim is male The prognosis is best defined by the associated risk factors for PTSD. Click a topic to explore: Prevelance Comorbidity As defined by DSM-IV-TR criteria, a traumatic event is necessary for the diagnosis of PTSD (DSM-IV-TR, 2000). One study reports that 40% of Americans have experienced at least one major trauma in their lifetimes and that 8-12% of Americans will suffer from PTSD at some point (Breslau et al., 1991). That means that approxiamately one-quarter of those who experience a severe trauma will subsequently develop PTSD. The National Comorbidity Survery (NCS), a more comprehensive study, found that 56% of Americans experience a lifetime trauma while only 8% develop PTSD (Perkonigg et al., 2000). Futhermore, many other studies have found variable rates of trauma and PTSD in the population, likely due to the variation among defining criteria. The prevailing message of these studies is that although PTSD only manifests in a portion of trauma victims, its overall prevelance is great enough to warrant significant attention. Prevelance Epidemiologists study the patterns of illness in a population, and two major epidemiological studies have shed some light on PTSD's prevelance. The National Vietnam Veterans Readjustment Survey (NVVRS), conducted between November 1986 and February 1988, comprised interviews of 3,016 American veterans selected to provide a representative sample of those who served in the armed forces during the Vietnam era. The National Comorbidity Survey (NCS), conducted between September 1990 and February 1992, comprised interviews of a representative national sample of 8,098 Americans aged 15-54 years (Kessler, 1995). The NCS Report provided the following information about PTSD in the general adult population: The estimated lifetime prevalence of PTSD among adult Americans is 7.8%, with women (10.4%) twice as likely as men (5%) to have PTSD at some point in their lives. This represents a small portion of those who have experienced at least one traumatic event; 60.7% of men and 51.2% of women reported at least one traumatic event. The most frequently experienced traumas were: Witnessing someone being badly injured or killed Being involved in a fire, flood, or natural disaster Being involved in a life-threatening accident Combat exposure The majority of the people in the NCS experienced two or more types of trauma. More than 10% of men and 6% of women reported four or more types of trauma during their lifetimes. The traumatic events most often associated with PTSD in men were rape, combat exposure, childhood neglect, and childhood physical abuse. For women, the most common events were rape, sexual molestation, physical attack, being threatened with a weapon, and childhood physical abuse. However, none of these events invariably produced PTSD in those exposed to it, and a particular type of traumatic event did not necessarily affect different portions of the population in the same way. The NCS report concluded that "PTSD is a highly prevalent lifetime disorder that often persists for years." The NVVRS report provided the following information about PTSD among Vietnam War veterans: The estimated lifetime prevalence of PTSD among American Vietnam theater veterans is 30.9% for men and 26.9% for women. Thus, more than half of all male Vietnam veterans and almost half of all female Vietnam veterans -vabout 1,700,000 Vietnam veterans in all - have experienced "clinically serious stress reaction symptoms." 15% of all male Vietnam veterans and 8% of all female Vietnam veterans are currently diagnosed with PTSD. Comorbidity PTSD is especially comorbid with Depressive, Anxiety, and Substance Disorders. This page is meant to serve as a source of info about Posttraumatic Stress Disorder, or PTSD. A debilitating disease affecting people of any age, PTSD develops after a significant traumatic event has occurred in someone’s life. This stressor can range from the unexpected death of a close relative, to sexual assault, to encountering a catastrophe first-hand. Common symptoms include increased arousal, reexperiencing of the event (flashbacks), and avoidance of reminders of the event. Current research estimates that about 1 in 10 people will suffer from PTSD during their lifetime. Women are twice as likely to develop the disorder. Given this prevalence, hopefully this website can help provide resources for prevention and links for effective treatments.