A member asked:

My friend is developing rough and dark patches over only his middle finger knuckles on both hands . not painful . what could be the possible cause . ?

A doctor has provided 1 answer
Dr. Rixt Luikenaar answered

Specializes in Obstetrics & Gynecology

Activity related: Most likely overexertion from long hours on computer. Stiff? Itchy? Could also be dryness/eczema. Tried cortisone cream? Tried moisturizer? Other thoughts; fungal skin infection? See your famdoc if curious.

Answered 12/9/2013

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