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10 Psoriatic Arthritis Symptoms
Fingernail and toenail pitting
Psoriatic arthritis can cause fingernails and toenails to become discolored or pitted (small depressions form in the nail), or even fall off.
This can happen with distal interphalangeal arthropathy, one of the five types of psoriatic arthritis. This type mostly affects the joints at the end of the fingers and toes, in addition to the nails.
It occurs in only 5% of patients, and is more common in men than women.
Because nail changes are specific to psoriatic arthritis (and psoriasis), it can help doctors diagnose the conditions.
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