Melasma: You are describing melasma, which is often seen as darker areas of pigmentation and can be associated with use of bcp or hormones. Alternatively, if you have a lip licking habit, then that causes very mild skin irritation which when exposed to sun could cause "post inflammatory hyperpigmentation.".
Answered 4/26/2014
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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