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Surgery is indicated for male pattern hair loss. When hair loss is due to medical causes surgery is usually not indicated.
Sudden hair loss, which may lead to complete baldness, is sometimes caused by an autoimmune illness called alopecia areata.
This usually gets better without treatment, but the new hair may grow back with no color.
It is associated with a number of medical illnesses including thyroid disease, ulcerative colitis, Addison's disease and vitiligo.
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