Or impetigo: Yellow crusty sores in the nasal area are usually impetigo (bacterial skin infection) - but if the sore is always in the exact same spot, and starts with painful blisters, it could be herpes simplex. There are treatments for both, so you should see your doctor or a dermatologist the next time it happens, get it cultured, and find out which it is.
Answered 2/6/2018
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A doctor has provided 1 answer
A doctor has provided 1 answer
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