This site is intended for healthcare professionals

Go to /sign-in page

You can view 5 more pages before signing in

Male pattern baldness

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

Authoring team

Androgenic alopecia (AGA) is a non scarring, progressive miniaturization of the hair follicle which has a characteristic pattern of distribution (1).

  • this is a common disorder affecting genetically predisposed men and women (1)
  • the prevalence increases with age in both sexes (2)
  • genetic factors determine age of onset and severity.

Hair loss is usually insidious, presenting as thinning rather than shedding.

In men

  • tend to lose hair over the crown, along the frontal hair line, and the temples
  • occasionally a female pattern of hair loss can be seen as well (1)
  • type 2 5 alpha-reductase is to believed to be important in the development of male-pattern baldness.

In women

  • hair loss over the frontal and central areas, but the parietal and occipital regions may be involved as well
  • occasionally it may occur in a male pattern as well (1)


Related pages

Create an account to add page annotations

Annotations allow you to add information to this page that would be handy to have on hand during a consultation. E.g. a website or number. This information will always show when you visit this page.

The content herein is provided for informational purposes and does not replace the need to apply professional clinical judgement when diagnosing or treating any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions.


Copyright 2024 Oxbridge Solutions Limited, a subsidiary of OmniaMed Communications Limited. All rights reserved. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions receives funding from advertising but maintains editorial independence.