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Idiopathic guttate hypomelanosis

What is idiopathic guttate hypomelanosis (IGH)  ?

  • These are discrete porcelain-white spots measuring about 5mm in diameter.
  • The lesions are localized on sun-exposed areas, more often on the forearms and shins.
  • These spots are stable and do not tend to grow.
  • Hairs located on the lesions are unaffected.
  • No treatment is needed. Foe cosmetic concerns, cryotherapy is sometimes tried as well as creams containing calcineurin inhibitors.
    Idiopathic Guttate Hypomelanosis (IGH)



How to distinguish between IGH and vitiligo ?

  • Vitiligo is also distributed symmetrically.
  • Lesions of vitiligo are chalk-colored and have an irregular border.
  • Spots of vitiligo have a tendency to grow.
  • Hairs located on the lesions are also affected and appear white.



Source of information: here