Nail Psoriasis (cont.)
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Nail Psoriasis Causes
Psoriasis is not contagious. How psoriasis of the nails develops is not completely known. It appears to result from a combination of genetic (inherited), immunologic, and environmental factors.
Psoriasis tends to run in families. If someone has a parent or a sibling who has psoriasis, he or she has a 16%-25% chance of having psoriasis, too. If both parents have psoriasis, a person's risk is 75%. Males and females are equally likely to have psoriasis. Psoriasis can occur in people of all races.
Medically Reviewed by a Doctor on 5/1/2014
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