Many things: But without seeing it very difficult to diagnose. Likely a blister, bite or start of fungus best to get it checked.
Answered 7/26/2013
5k views
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question