white forelock

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white fore·lock

a triangular or diamond-shaped depigmented macule with white hairs, usually located in the anterior midline of the scalp, seen in piebaldism.

Farlex Partner Medical Dictionary © Farlex 2012

A striking focal depigmentation of hair of the anterior scalp margin, which has no clinical significance, and is typically seen in the Waardenburg syndrome, which is characterised by leukoderma, a flattened nasal bridge and cochlear deafness, see there. It may also be seen in tuberous sclerosis and Vogt-Koyanagi syndrome

white forelock

A white tuft of hair that grows on the forehead. It is associated with Waardenburg syndrome, and is seen in vitiligo.