Androgenetic Alopecia (AGA), or male/female pattern hair loss, is a genetically determined disorder driven by increased androgen sensitivity of hair follicles in a specific pattern and other factors. Androgen levels generally are normal or even low.
Androgenic Alopecia refers to hair loss caused by excess androgens, either intrinsic from a tumor or exogenous from supplements.
The terms are often incorrectly used interchangeably.
Footnotes
↵* The author acknowledges and thanks Dr. George Cotsarelis for reviewing the article.
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