Dark patch: sounds like dry skin or possible eczema or psoriasis.
Answered 4/16/2015
3k views
Working Skin.: Darken, roughened areas of skin are often seen around joints and areas of high skin motility. They are usually due to multiple layers of shin causing a pigment increase perception. You can always have it evaluated to see if it is something else, but often there is little that can be done.
Answered 9/13/2018
1.8k views
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A doctor has provided 1 answer
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