It depends.: You might have been born with it. This happens sometimes, and is usually called a port wine stain, or simply a discoloration of the skin due to lack of pigment. It also might be a lesion/cut/bite that healed long ago and stayed red. If you have others, it could be a skin condition from some disease. It would be wise to see your doctor to be sure, or just be aware of it if you are ok otherwise.
Answered 1/21/2019
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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