Many possibilities.: The most common, statistically, are viral illness, drug reaction, and allergy to something you ate or inhaled. If it is severe enough to cause you concern, or if you are also sick, or running a fever, see a doctor and make sure it is not something significant.
Answered 9/16/2013
4.9k views
Thanks for asking!: Without a picture it would be hard to diagnose.
Answered 9/17/2013
4.9k views
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A doctor has provided 1 answer
A doctor has provided 1 answer
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