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Abstract
Although knowledge of normal scalp anatomy, the hair follicle, and the dynamics of
hair cycling is substantial,1–3 the histopathology of male-pattern baldness (MPB), also called premature baldness
or androgenetic alopecia, is uncertain. Textbook accounts are uninformative,4,5 and controversies are plentiful. Disputes exist about matters that seem quite simple,
for example, whether the sebaceous glands are enlarged or shrunken. There are also
opposing views on the fate of the arrector pili muscles. All agree that hair follicles
become progressively smaller (miniaturized), but whether there is an actual loss of
follicles is in contention. Two important publications on various cutaneous aspects
of aging do not even include chapters on hair.6,7
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References
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© 1988 Published by Elsevier Inc.
