Although it is not proven, hereditary seems to be a reason for a more severe case of alopecia areata. You may be more prone to lose your hair entirely to this autoimmune disease not only if you have a family history of alopecia areata, but if you have allergies or another autoimmune disease. Developing the condition before puberty or having episodes that last longer than a year can also increase the chance of baldness. Nevertheless, it is unknown precisely what causes the body's immune system to target hair follicles in this way. In general, it is more common in people younger than 20 years of age, but kids and adults can be affected as well as men and women.
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