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Small pale spots

Idiopathic guttate hypomelanosis

Idiopathic guttate hypomelanosis causes small, sharply defined pale spots, mainly on chronically sun-exposed arms and legs.

In breve

Punti essenziali

  • Usually a few millimetres
  • More common with age
  • Arms and legs
  • Melanocytes remain present
01

Typical distribution

The spots are often numerous, round and small. Vitiligo patches are generally larger, may merge and follow different patterns.

02

Assessment

Age, size, distribution and course support the diagnosis. New or unusual changes still deserve examination.

Base editoriale

Editorial basis: current AWMF S2k guideline on the diagnosis and treatment of vitiligo, register 013-093, version 2.0 dated 27 July 2026. Reviewed on 2 September 2026.

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