Hormonal changes: Assuming you are in good health, it is likely hormonal related and a natural aging process. It can occur due to malnutrition, iatrogenic due to shaving and plucking, hypothyroidism, psychiatric disease (trichotillomania), and other issues.
Answered 1/6/2014
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7 doctors weighed in across 2 answers
8 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
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