Conversation: The conversation between human and AI assistant.
[|Human|] hi , dr prasad . i have  a question for u . i have some black spot on left portion os stomach . it does nt pain or anything . but sometime i feel like somebody just pinch me with a pin ,thts it . is there any thing tht i should be worried abt thnks
[|AI|]  HI. Thanks for your query and an elucidated history. The lack spot on the abdomen on the left side with the feeling of pinching with a pin is suggestive of some sort of dermatitis. If this is long-standing Melanoma has to be ruled out. I would request to consult a dermatologist for a diagnosis and treatment, and if said, so you have to go for an excision biopsy for confirmation that this is not a Melanoma-Cancer can cause too much problem hence it is required to get a proper diagnosis.