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  Balding
 
Author: Elizabeth Whitmore Last modified: August 16, 2002
DIAGNOSTIC CRITERIA

  EPIDEMIOLOGY

  • Androgenetic alopecia(AGA), which may begin as early as the teen years, affects 50% of men by age 50. It has been noted that the incidence of AA is greater in Caucasians than African and Asian America

  RISK FACTORS

  • AGA requires an inherited genetic tendency toward age associated hair loss,likely determined by multiple genes. Although at least one parent usually "expresses" these genes (ie, also has AGA), occas

  SIGNS AND SYMPTOMS

  • AGA usually begins with recession of the hairline at the temples, followed by thinning over the vertex (top back) of the scalp. Hairs become finer and shorter over time, gradually progressing over man

  DIFFERENTIAL DIAGNOSIS

  • "Patterned" hair loss with temporal recession of the hairline and thinning over the vertex as occurs with AGA is unique. Although thyroid disease, various internal disorders, and some medications ma

  LABORATORY FINDINGS

  • By definition, AGA is a normal human condition. It is not associated with laboratory abnormalities.
  • Studies have suggested that early onset and more severe AGA (effecting the whole top of the scalp) is a marker of increased risk of coronary artery disease. Additionally, a recent study found that sig

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TREATMENT
FDA APPROVED TREATMENTS: ROGAINE AND PROPECIA. THERE ARE NO "HEAD TO HEAD" COMPARISONS OF THE TW
OTHER OPTIONS: HAIR TRANSPLANTATION WITH SMALL , MINI, AND MICRO- HAIR UNITS; CAMOUFLAGE; OBSERVATIO
 
IMPORTANT POINTS/RECOMMENDATIONS
  • Many unproven treatments are available and when cosidering these the phrase "buyer beware" should be kept in mind. There is no medical regulatory office overseeing these products and occassionally
  • In considering the effects of lifestyle on hair loss, two considerations may be relevant, at least in theory. Because 5-DHT is essential for AGA, it is possible that modification of the level may make
 
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