Last reviewed 01/2018

These are benign vascular lesions.

Characteristic features:

  • red to blue
  • approximately 2-6 mm diameter
  • hyperkeratotic
  • non-blanching
  • may bleed if traumatised
  • found on the buttocks, thighs, genitalia and lower trunk

Possible associated conditions:

  • angiokeratomata are common in Fabry's disease
  • also may be found in lysosomal disease
  • in general, the presence of these lesions is idiopathic

No treatment is generally required.


  • sometimes misdiagnosed as Kaposi’s sarcoma or bacillary angiomatosis
  • angiokeratomas of Anderson–Fabry disease (angiokeratoma corporis diffusum) are smaller, less hyperkeratotic, pinhead lesions that are found more extensively around the lower limb girdle


  1. Bunker C B. Male genital dermatology. London: Saunders, 2004.