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What causes alopecia areata? A normal hair follicle cycles through multiple phases: Anagen is the active growth phase lasting one to eight years; Catagen is a short involution phase lasting several weeks; Telogen is the resting phase lasting several months; Exogen is the shedding of the hair.
Alopecia areata is an autoimmune disease that attacks your hair follicles, causing patchy hair loss. Learn about the symptoms, diagnosis and treatment options for this condition, and how it affects your physical and mental health.
22 sty 2020 · What causes alopecia areata? Alopecia areata is an autoimmune disease. This type of disease develops when your immune system mistakes a part of your body as foreign and attacks. If you have alopecia areata, your immune system mistakenly attacks hair follicles (where hair grows) and sometimes your nails.
19 paź 2023 · Alopecia areata is an autoimmune condition that causes hair loss in patches. Learn about the types, risk factors, diagnosis, and treatment options for this common hair disorder.
Causes of Alopecia Areata. In alopecia areata, the immune system mistakenly attacks hair follicles, causing inflammation. Researchers do not fully understand what causes the immune attack on hair follicles, but they believe that both genetic and environmental (non-genetic) factors play a role.
Alopecia areata can be triggered by environmental factors like stress, injury, or illness. But in many cases, there is no clear answer as to why someone develops alopecia areata. 1 However, researchers have begun to understand the science behind the disease.
Alopecia areata causes hair loss, usually on the head and face. The disease is different for each person—some people’s hair grows back fully, while it does not in others. There is no cure for alopecia areata, but there are treatments that help hair grow back more quickly.
