Hyperpigmented plaques over forearms in a teenage girl with atopic dermatitis
Adrian KC Cheng 鄭嘉俊
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Clinical history:
A teenage girl with a history of atopic dermatitis complained of hyperpigmentation over her upper limbs for several months. She was unable to remove the pigmentation by soap and water. Examination revealed coalescing brownish thin plaques distributed symmetrically over her antecubital fossae and volar forearms. Dermoscopy showed polygonal brownish scales.
What is the diagnosis?
| A. | Acanthosis nigricans |
| B. | Terra-firma forme dermatosis |
| C. | Post-inflammatory hyperpigmentation |
| D. | Confluent and reticulated papillomatosis |
The slide and the question was prepared by:
Dr. Adrian KC Cheng, MBBS(HK), MRCP(UK), MSc GEOR (CUHK), FHKCP, FHKAM (Medicine)
Specialist in Dermatology & Venereology;
Associate Consultant,