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Albinism al-buh-nih-zum Developed by Mona L. Bell Definition: A group of genetic disorders in which there is partial or total lack of the pigment melanin in the eyes, skin, and hair in a vertebrate. (from Latin root word: albus, "white"; also called achromia, achromasia, or achromatosis ) Sometimes, a child might be born whose body can't make a normal amount of melanin (mel-uh-nin), which is a chemical in our bodies that colors our skin, eyes, and hair. Melanin is made by melanocytes (muh-lah-nuh-sytes), which are cells found in the bottom layer of our skin. Individuals with albinism disorders may lack pigment (color) in their skin, eyes, and hair. The most common term used for a person affected by albinism is "albino". Most children with albinism have blue eyes, and others have brownish eyes. In some cases of albinism, a kid's eyes might appear pink or reddish. This isn't because the iris (the colored part of the eye) is pink or red. It's because the iris actually has very little color. The eyes appear pink or red because the blood vessels inside of the eye (on the retina) show through the iris. Albinism Cause Although albinism can be assumed, based 0ne’s appearance or family history of the disorder, a complete medical eye exam on by an eye doctor, a general physical exam and a genetic evaluation (an investigation of the family history) can help diagnose and define the type of albinism. In general, albinism stems from a person's genes which carry information that makes us unique and gives us our physical traits that determine what we look like and much more. All of us have two sets of genes, one from our father and the other from our mother. Each parent has a normal pigment gene and an albinism gene. Regardless of whether the parents have signs of the disorder or not, a child can have albinism, if the father's albinism gene and the mother's albinism gene are both passed on to the child. Albinism Challenges Some children with albinism might have pale skin or hair. Patchy or lack of skin pigmentation makes the child more susceptible to sunburn and skin cancers. It is possible for albinism to only affect the eyes, which is associated with a number of vision defects, such as photophobia (light sensitivity, strabismus (crossed eyes), astigmatism (a problem with the curve of the cornea), nystagmus (rapid eye movement), and functional blindness. The eyes of children with albinism can be very sensitive to light. They often squint in bright light, because the iris doesn't have enough color and can't properly shield the retina from light. In some rare types of albinism, affected individuals can have bleeding problems or increased susceptibility to infections, especially during childhood. Early diagnosis is important for proper treatment of these problems. 1. 2. 3. 4. Albinism Categories The most severe category of albinism is called oculocutaneous albinism. People with this type of albinism have white or pink hair, skin, and iris color, as well as vision problems. Another category of albism, called ocular albinism type 1 (OA1), affects only the eyes. The person's skin and eye colors are usually in the normal range. However, an eye exam will show that there is no coloring in the back of the eye (retina). Hermansky-Pudlak syndrome (HPS) is a form of albinism caused by a single gene. It can occur with a bleeding disorder, as well as with lung and bowel diseases. Other complex diseases may lead to loss of coloring in only a certain area (localized albinism). These conditions include: Chediak-Higashi syndrome (lack of Albinism Cure Albinism does not usually affect lifespan. However, it is a lifelong condition. Although there is no cure for poor or total lack of pigment production or a treatment method to correct early poor development of central vision, proper eye evaluation and management can beneficial. The good news is: eye misalignment can be treated. While its objective is to relieve symptoms, treatment depends on the severity of the disorder. Wearing sunglasses, wraparound sunglasses with ultraviolet filters, or tinted contact lenses can help make a child with albinism more comfortable out in the sun. An eye doctor can assist with determining if a child with albinism needs surgery or to wear glasses or contact lenses to improve their sight. Magnifying glasses for reading and low vision aids for distance vision can also be helpful. A wide brimmed hat, tight knit clothing, and sunscreen can help protect sensitive skin from the sun. Most kids with albinism can be anything they want to be,… just like any other kid! Additional References: http://upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Albinisitic_man_por trait.jpg/220px-thumb.jpg http://www.squidoo.com/albino-animals http://kidshealth.org/kid/health_problems/skin/albinism.html www.medterms.com/ coloring all over the skin, but not complete) Tuberous sclerosis (small areas without http://www.webmd.com/parenting/tips-for-parents-visually-impaired-children skin coloring ) http://www.uveitis.org/kids/EYE-brary/article5.htm Waardenburg syndrome (often a lock of http://www.albinism.org hair that grows on the forehead, or no coloring in one or both irises)