LOOSE ANAGEN SYNDROME

A frequently seen but only recently described hairloss disorder affecting (predominately but not exclusively) young blonde female children.

Hairshafts epilate easily and apparently painlessly in their Anagen (growth) phase. The condition presents as diffuse or patchy baldness primarily at the back of the head (posterior vertex and occiput) and is thought to be exacerbated by pillow contact during sleep. The condition which understandably provides concerns among parents is usually transitory, spontaneous recovery occurring usually within a few years.

The pathogenesis is not understood but abnormalities of the hairshaft's anchoring tissue (the inner layer of the epithelial sheath) may be inculcated. Misdiagnosis with alopecia areata can occur.

Currently there is no effective treatment and regrowth is usually spontaneous. However hairshafts may not attain great length before losses recur.

Although LAS predominately effects young blonde female children, it has also been reported in young male children, and others with very fine brown/black hair. LAS has also been reported in adult blonde females.

Currently the author has no evidence of LAS in children of Mongoloid or Afroid hair type.