A 32-year-old female asked:
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Can melanoma cause rash that looks like allergy? And can melanoma cause iron and vitamin d deficiency?

1 doctor answer
Dr. John Ebner
17 years experience in Dermatology
Not Likely: Melanoma would rarely ever cause an allergy type rash unless it was very severe and at a late stage. It is usually found as an abnormal pigmented lesion on the body, in the mouth, or on the retina of the eye. You should get a skin exam to have the rash looked at. There are many other less scary causes for an allergy rash. Melanoma would rarely cause vitamin deficiencies, unless late stage.
Answered on Sep 28, 2016
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Dr. William A Biermann
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Not typically: Melanoma can spread to the stomach or bowel and cause blood loss and decreased iron. Vitamin d is not usually impaired by melanoma.
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