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I have a spot on my arm, about an eighth inch in diameter,

that is slightly red, and...
I have a spot on my arm, about an eighth inch in diameter, that is slightly red, and not usually noticeable. It looks almost like a scar. But, if anything rubs against it it becomes extremely itchy. If I proceed to scratch it, even a little, it become a raised bump, which can blister, or gets scaley and bleed. It's been there about 5 years, and has't changed in size that I can tell. I need to know what it is, and if I need to get rid of it/how.
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Answered in 1 hour by:
7/8/2010
Dr. Skinner
Dr. Skinner, Dermatologist
Category: Dermatology
Satisfied Customers: 1,555
Experience: MD , DNB ( D &V), FAAD
Verified
This is localised mastocytosis and the phenomenon which you observe on rubbing is the Darier's sign.This is due to accumulation of mast cells and release of histamine.Please visit a dermatologist and get a biopsy done.
Dr. Skinner
Dr. Skinner, Dermatologist
Category: Dermatology
Satisfied Customers: 1,555
Experience: MD , DNB ( D &V), FAAD
Verified
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