This is a Free Dermatology Question posted via https://www.onlineskinspecialist.com/SkinCareblog/free-dermatology-consultation/

Subject: Message Body:
Hello,

for the last 3 years i’ve had a grey skin discoloration on one side of my back, it can itch severely and though has not really changed or grown there is a new patch starting on the other side of my back. it is not raised or scaly, no redness or bumps. Any ideas what this could be?

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