Several possibilites: Contact allergy and fungus are both possible, but usually are itchy. Contact allergy is usually due to nickel if directly under the snap on the front of your pants. Acanthosis nigricans also possible.
Answered 11/1/2020
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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