Lichen planus: Lichen planus is not related to Human papilloma virus (HPV). The cause is not entirely clear but thought to be an immune response of some kind to virus, chemicals or allergens. It is uncommon in younger people but not a cause for concern.
Answered 10/3/2014
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5 doctors weighed in across 3 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
4 doctors weighed in across 2 answers
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