![]() ![]() But, unlike many inherited conditions, both parents must contribute specific genes to pass alopecia areata on to their children. The National Alopecia Areata Foundation say alopecia areata can run in families. However, the immune system may not be the only cause of alopecia universalis. Researchers think that alopecia universalis is an immune system disorder, where the body’s immune system mistakenly attacks the hair follicles. They know that people with alopecia areata have a genetic predisposition (increased likelihood) to it, but how is it triggered? Do the triggers first happen inside the body (from bacteria or a virus), outside the body (environmental), or a combination of both? Many believe it is a combination.Share on Pinterest Alocpecia universalis is characterized by complete loss of hair.Īlopecia universalis is thought to be an advanced form of another condition known as alopecia areata. And the risk increases even more if that relative lost their hair before age 30.Īnother thing researchers aren’t sure about is what triggers the disease. The risk of alopecia areata increases if you have a close relative with it. About 20% of people with alopecia areata have at least one family member who also has the disease. Scientists know it is an autoimmune disease, but they aren’t sure why the immune system attacks the healthy hair follicles of people with the gene variations in the first place. For example, identical twins share all the same genes, but if one twin has alopecia areata, there is only a 55% chance that the other twin will have it. But not everyone with the genes develops the disease. Several U.S.-based studies found the odds of developing alopecia areata were higher among Asian, Black,and Hispanic individuals than among whites.Īlopecia areata is a polygenic disease, meaning it is related to multiple genetic factors. Research suggests that women are more likely to develop alopecia areata than men and people of some races and ethnicities may have a higher chance of developing the disease. ![]() More than 80% show signs of the disease before age 40, and 40% experience symptoms by age 20. The hair loss often first appears during childhood but how and when is different for everyone.Īlthough alopecia areata can begin at any age, most individuals develop the disease early in life. Who gets it? People of all ages, genders, and racial and ethnic groups are affected by the alopecia areata. currently have some form of alopecia areata. and 160 million worldwide have alopecia areata or have had, or will have it. What does this mean? Nearly 6.7 million people in the U.S. People with alopecia areata most often lose hair in circular, coin-sized patches on the scalp, but in more severe cases, they may lose all of their hair. About 2% of people across the world will experience alopecia areata at some point in their lifetime. The disease causes hair loss on the scalp, face, and sometimes other body areas, like under the arms or on the legs. The word alopecia means bald areata means patchy. If you have an autoimmune disease, your body’s immune system mistakes your healthy tissues as dangerous and begins attacking them. Alopecia areata is a common autoimmune skin disease. ![]()
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