* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Document
Pharmacogenomics wikipedia , lookup
Nicotinic agonist wikipedia , lookup
5-HT2C receptor agonist wikipedia , lookup
5-HT3 antagonist wikipedia , lookup
Neuropsychopharmacology wikipedia , lookup
Serotonin syndrome wikipedia , lookup
Neuropharmacology wikipedia , lookup
Psychopharmacology wikipedia , lookup
Theralizumab wikipedia , lookup
HEADACHES CHRONIC HEADACHE Determining Its quality,severity ,location,duration,and time course as well as the conditions that produce ,exacerbate or relieve it Ausculation-Palpation Quality of cephalic pain in most patients is dull (not sharp localize) Throbbing D.D Waxing&Waning The most Intense headaches : SAH-Meningitis—Migraine-ClusterTic doulourex LOCATION OF HEADACHE Supratentorial SOL:Frontotemporal Infratentorial SOL:Occipitonuchal Ear pain :Referal Vertex or Biparietal :Sphenoid or ethmoid sinus disease or thrombosis of SSS MODE OF ONSET &DURATION SAH:Abrup Meningitis:Hours or days Ophthalmodynia :A few seconds Ice pick headache:Seconds Classic migraine:early morning Cluster:Nightly SOL: Any time of day or night IICP :Worse in morning Tension headache :Persists for weeks RELATION OF HEADACHE TO CERTAIN BIOLOGIC EVENTS Premenstural headache:Tension or , Migraine Cervical spine disease:First movement of the neck is painful Eye strain headache Alcohol-Exercise-Straining-Coughing- MIGRAINE CLINICAL FEATURES 90% <40 YEARS OLD F >M 90% Familial History Positive 20% of Women 6% Men MIGRAINE WITHOUT AURA Prodormal Phase: May awaken the subjects May be unilateral Lower half headache Prefer dark &quiet room Photophobia&phonophobia&osmopho Nausea-vomiting(delayed)-diarrhea Anorexia> Nausea Blurred vision-LightheadednessEpistaxis-subconjunctival hemorrhage Fever-PAT (rarely) Peak of pain :30min to several hours Frequency&severity is extremly variabl Status migrainosus = Hospitalization Chronic daily headache=Attack at less than weekly MIGRAIN WITH AURA Aura=Transient visual,sensory,motor,or language disturbance Headache is identical to common M prodormal symptoms may be accured Visual aura(most common) teichopsia Homonymous field (white or colored) Positive scotoma then negative scoto Metamorphopsia Photopsia--- Retinal migraine Contralateral headache Sensory aura(second most common) Paresthesias(positive)numbness(neg) Variable distibution 20-30min DD:TIA-seizure Language aura:dysphasia or aphasia Alexia-agraphia-mild confusion Weakness of the limbs or facial Transient abdominal symptomsdisturbed mentation-dejavu MIGRAINE AURA WITHOUT HEADACHE TREATMENT & MANAGEMENT Reassurance-lack of cure Normal CT or MRI Avoidance of trigger factors(caffeinesmoking-alcohol-reserpine-OCPnifedipine-theophilline-estrogens) Avoidance of fasting & insomnia & tyramin PHARMACOTHERAPY Triptans : mechanisms : 5 HT1 B agonists 5 HT1 D agonists have beneficial effect on migraine associated symptoms side effects : Tingling Flash sensations Heaviness or pressure in neck or chest Contrandications : IHD , HTN , using ergo , peripheral vascular disease ,pregnancy , lactation , hemiplegic migraine, Well tolerated : naratriptan almotriptan , Triptan +NSAIDS Triptan + metoclopramide Ergots : vasoconstrictors and vasodilators 5 –HT receptors agonists oral –rectal –parenteral dose : 2mg + caffeine repeat : after 1 hour 1-2 mg rectally+analgesic orally 10mg metoclopramide Supp : chlorpromazine 25-100 mg or prochlorperazine 25mg or supp : acetaminophen Caution in : HTN , peripheral vascular disease Contraindicated : IHD , pregnancy , prolonged aura Subcutaneous and Intranasal Serotonin (5-HT) Agonists HEADACHE RESPONSE (%)* DRUG DOSE (mg) 1 HR 2HR 4HR RECURRENCE OF HEADACHE(%)' Di hydros rgo la mine Subcutaneous 1 57 73 85 18 Intranasal 2 46 47-61 56-70 14 Subcutaneous 6 70 75 83 35-40 Intranasal 20 55 60 NA 35-40 5 55 70 78 25 Sumatriptan Zolmitriptan Intranasal Oral Serotonin (5-HT) Agonists HEADACHE RESPONSE (%)' DOSE (mg) 1 HR 2HR 4 HR RECURRENCE OF HEADACHE (%) Almotriptan 12.5 35 57 NA 23 Eletriptan 20.0 20 49 NA 30 40.0 30 60 NA 22 Frovatriptan 2.5 NA 42 61 10-25 Naratriptan 1.0 19 42 51 17-38 25 21 48 67 5.0 30 60 NA 10-0 37 67-77 NA 25 NA 52 68 50 NA 50 70 100 NA 56 75 2.5 38 64 75 5.0 44 66 77 DRUG Rizatriptan Sumatriptan Zolrmitriptan 30-35 35-40 31 Serotonin (5-HT) Agonists Used in Acute Migraine Treatment MAY REPEAT DOSES MAXIMUM DOSE DRUG ROUTE(S) DOSE IF HEADACHE RECURS PER 24 HR Dihydroergotamine IV 0.5, 1.0 mg 1 hr 3mg (DHE-45) IM 0.5, 1.0mg 1 hr 3mg sc 0.5, I.Omg 1 hr 3mg (Migranal) Nasal spray 2mg (0.5mg/spray )one spray in 3mg each nostril, repeal in 15 min Almotriptan (Axert) Oral 12.5mg 2hr 25 mg Eletriptan (Replax) Frovatrrptan (Frova) Naratriptan (Amerge) Rizatriptan (Maxalt) Oral Oral 2.5mg 1 mg, 2.5mg* Oral Oral Oral Sumatriptan (Imitrex) Zolmitriplan (Zomig) 20, 40 mg 5mg, lOmg' 25mg, 50mg, 100mg 2hr 80mg 2hr 7.5 mg 4 hr 5mg 2hr 30 mg 2hr 300 mg 2hr 12mg SC 6mg Intranasal 5 mg, 20 mg* Oral 2.5mg*, 5mg 2hr Intranasal 5mg 2hr 40 mg 10 mg 10mg Nonhormonal Prophylaxis for Menstrual Migraine CYCLIC (PERIMENSTURAL) DAYS -3THROUGH +3 Nonsteroidal anti-inflammatory drugs Naproxen sodium 550 mg bid Mefenamic acid 250 mg tid Ketoprofen 75mg tid Triptans and ergots Sumatriptan 25mg tid Naratriptan 1.0 mg tid or 2.5 mg bid Frovatriptan 2.5 mg once daily Zolmitriptan 2.5mg bid Ergotamine tartrate + caffeine (Wigraine) 1 mg qhs or bid Dihydroergotamine 0.5-1.0mg (SC, IM, or intranasal) bid NONCYCLIC (THROUGHOUT CYCLE) Tricyclic antidepressants Nortriptyline or amitriptyline 10-150 mg qhs Beta-blocker Propranolol or nadotlol 40-240 mg daily Calcium-channel blocker Verapamil 240-480mg daily Anticonvulsant Divalproex 250-500 mg bid Topamax 75mgqhs to 100mg bid Dopamine agonists Bromocriptine2.5-5.0mg tid Other Magnesium 360-600mg daily PROPHYLACTIC TREATMENT Beta blockers :Propranolol 80240mg/d for 2-3months side effects (lethargy –depression -hypotension-bradycardia impotence-insomnia-nightmare)Group* C Timolol - Nadolol- AtenololMotoprolol Antidepressants : Amitriptyline : effect :blockade of noradrenaline uptake inhibition of serotonin re uptake unknown Side effects : morning drowsiness , dryness of the mouth , weight gain, tachycardia ,vertigo , constipation , B.M depression Group :D duration: 3months Phenelzine (MAOI) : drug interactions : sympathomimetics , anticholinergic , TCA , oppioids ( meperidine ) Side effects : HTN , hallucinations , retention of urine , agitation Calcium channel blockers : mechanism : unknown , vasoconstriction , prevention of platelet aggregation ,alteration in release and reuptake of serotonin. Verapamil : 80-160mg TDS ,effective in classic migraine Side effects: vertigo ,constipation ,HF bradycardia ,V.F: half life:2.8-4.7h form:tab:40-80mg FC tab:240mg ing:5mg / 2mg metabolism :liver excretion :kidney group :C , flunarizine? nimodipine? Diltiazem? Anticonvulsants : mechanisms: unknown Sodium channel inhibition, GABA Na-valproate :dose: 500-1750mg/d Side effects: sedation , dizziness, appetite, LFT, hair loss, BT, Group :D Form :tab 200-500mg syrup 200mg /5cc HL :6-16 h Gabapentin : relative well tolerated side effects : dizziness ,sedation ,depression , ataxia , fatigue , leukopenia dose:900-2400mg/d cap: 100- 300-400 mg HL:5-7h contraindication <12 years group:C Topiramate : mechanisms : Ca channel blocker , GABA Dose : 15-25 mg/d 75-200 mg/d Form: tab : 25-50-100-200 mg Side effects : sedation cognitive problems , paresthesia , weight loss, ataxia , depression Group :C HL : 21h excretion: kidney Serotonergic agents : 1)methysergide Side effects: retroperitoneal fibrosis 1/1000 pulmonary and heart valve fibrosis ,nausea, leg pain, abdominal cramp ,agitation, hallucination 6 months after 4 weeks stop restart U/A + Cr . CT or MRI of abdomen ,CXR Dose: 2mg /d 7-10 days 6-8mg/d 2) Cyproheptadine : antibradykinin, antiplatelet aggregation, serotonin antagonist ,minor role in adults Side effects: weight gain drowsiness group: B tab: 4mg breast feeding contraiadicoted Riboflavin dose: 400mg/d Group :A Mg supplementation : dose : 600 mg/d Side effects : diarrhea, DTR , hypotension , cardiac block , respiratory paralysis . Contraindication : heart block vial : 10-20 -50 % Group : D HL : 0.5 -4 h Aspirin : 325 mg NSAIDS : Botulinum : release of proinflammatory and vasodilating neuropeptide block glutamate of Dose : 100 units beginning of effect after 710 days persists to 3 months Imipramine-Desipramine-Nortriptyline Fluoxetine&Sertraline ? STATUS MIGRAINOSUS Fluid replecement-Correction of electrolyte imbalance-- Suppression of vomiting DHE&Antiemetics TID Dexamethasone or Prednisolone 20 mg QID --- taper 2-3 days Tention Type Headache The most common almost always mild-rare CCTH Criteria for diagnosis : lasts from 30 min to a week and has 2 or more fallowing 1)bilateral 2)pressure nonpulsatile3)mild to moderate 4)not aggravated by routin activity TTH unassociated with nausea and vomiting can have photophobia or phonophobia but not both—tension and stress are associated Treatment : NSAIDS- butalbital +analgesics Preventive therapy: TCA-mirtazapine-topiramatevenlafaxine-tizanidine -botulinium toxin SSRIs not effective CLUSTER HEADACHE Episodic type:1-3 attack of periorbital pain each day for 4-8 weeks- pain free interval one year Chronic form :attacks are similar there are no sustained remission M/F=8/1 no hereditary prevalence =69/100000 Age= 20-50y Clinical features : periorbital( temporal or maxillary) pain without warning reach crescendo 5min-sever and deep-nonflactuating rarely pulsatile-strictly unilateral usually same side-lasts 30 min to 2 hours-homolateral lacrimation,red eye, nasal stuffiness and ptosis nausea is uncommon-alcohol provokes attack in 70% on-off vulnerability to alcohol is pathognomonic Treatment :the most satisfactory treatment is prevention” lithium 600-900 mg/d particulary chronic form prednisone 10days ;beginning 60 mg daily for 7days and rapidly tapering melatonin9 mg HS occasionally ergotamine 1mg is most effective when given 1-2hours before a single nocturnal attack ……..Treatment: occipital nerve stimulation-hypothalamic S Treatment of attack : oxygen inhalation 10 lit/min for 15 min – intranasal lidocaine 4%topical or 2%viscous-sumatriptan 6mg shorten attack 10-15 min