Multiple Depigmented Macules on Trunk

  • Pawan Kumar
Part of the Clinical Cases in Dermatology book series (CLIDADE)


A 55 year old male presented with multiple hypopigmented macules over back and abdomen since 1 year. Dermoscopy showed amoeboid pattern with pseudopod like projection. Based on this information diagnosis of idiopathic guttate hypermelanosis was made. Idiopathic guttate hypomelanosis is a common, acquired benign condition characterized by few or multiple small hypo to depigmented macules of size varying from 2 mm to 2 cm usually seen over shin, forearms but can be seen on other body parts, noticed in middle aged people. Sunlight and repeated trauma play a role in etiopathogenesis. Diagnosis is usually clinical. Dermoscopy reveals characteristic patterns including amoeboid, feathery, petaloid and nebuloid with perimetric pigmentary extensions (pseudopods). Management is usually based on patients concerns, simple reassurance would be enough, if cosmetically worried management options include topical tacrolimus, topical retinoids, spot peel with 88% phenol, dermabrasion, fractional CO2 laser, punch excision.


Idiopathic guttate hypomelanosis Benign leukoderma Geriatric Senile degeneration 


  1. 1.
    Juntongjin P, Laosakul K. Idiopathic guttate hypomelanosis: a review of its etiology, pathogenesis, findings, and treatments. Am J Clin Dermatol. 2016;17(4):403–11.CrossRefGoogle Scholar
  2. 2.
    Kim SK, Kim EH, Kang HY, Lee ES, Sohn S, Kim YC. Comprehensive understanding of idiopathic guttate hypomelanosis: clinical and histopathological correlation. Int J Dermatol. 2010;49(2):162–6.CrossRefGoogle Scholar
  3. 3.
    Ankad BS, Beergouder SL. Dermoscopic evaluation of idiopathic guttate hypomelanosis: a preliminary observation. Indian Dermatol Online J. 2015;6(3):164–7.CrossRefGoogle Scholar
  4. 4.
    Ravikiran SP, Sacchidanand S, Leelavathy B. Therapeutic wounding—88% phenol in idiopathic guttate hypomelanosis. Indian Dermatol Online J. 2014;5(1):14–8.CrossRefGoogle Scholar
  5. 5.
    Rerknimitr P, Chitvanich S, Pongprutthipan M, Panchaprateep R, Asawanonda P. Non-ablative fractional photothermolysis in treatment of idiopathic guttate hypomelanosis. J Eur Acad Dermatol Venereol. 2015;29(11):2238–42.CrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Pawan Kumar
    • 1
  1. 1.Kempegowda Institute of Medical SciencesBengaluruIndia

Personalised recommendations