How do doctors differentiate a genetic cause of hair loss versus other hair loss causes?
Androgenetic hair loss is diagnosed primarily by its distinctive pattern (non-scarring, frontal-temporal recession) and duration (several years) in a male. A positive family history is supportive.
In females, as the pattern may not very distinctive, exclusion of underlying chronic illnesses such as thyroid disease, iron deficiency may be needed.
Hope this helps!
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