A 36-year-old male asked:
had a dark spot next to belly button for years. sometimes itches and may be tiny knot underneath. no changes. derm doesn't know. any ideas, serious?
2 doctor answers
Dr. Jack Mutnick answered
17 years experience Allergy and Immunology
Rash: If you scratch it and it welts up then it could very well be something called a mastocytoma. If you have only seen one dermatologist then i would make an appt with a new one for a new and different opinion.
Answered on Aug 19, 2013
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