A member asked:

I have darkish brown mcp thumb joints. skin seems a little rough and dry there.i don't smoke or use meds.what could it be and what can i do about it?

A doctor has provided 1 answer
Dr. Matt Wachsman answered

Specializes in Internal Medicine

Chronic skin: abrasion, irritation, trauma, use causes skin to thicken and darken. Joints get bent a lot.

Answered 8/18/2014

3.8k views

Thank

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