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Summer 2016, Vol. 24 No. 2

Hong Kong J. Dermatol. Venereol. (2016) 24, 98


Dermato-venereological Quiz

Dermato-venereological Quiz

SM Wong 黃思敏 and RCW Su 蘇志慰

A 30-year-old gentleman complained of bluish-grey discolouration of bilateral shins for 3 months (Figure 1). He denied having other symptoms except for cosmetic concern. The discolouration accentuated after summer vacation. He had also acne vulgaris and was on medications.

Figure 1

Questions

1. What are the differential diagnoses?

2. What is the likely diagnosis?

3. What is the likely cause?

4. What are the treatment options?