Merck Manual

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Psoriatic Arthritis (Dactylitis)
Psoriatic Arthritis (Dactylitis)
Psoriatic Arthritis (Dactylitis)

This photo shows dactylitis or sausage digits, so-called because the swelling causes the fingers to take on a sausage-shaped appearance, in a person who has psoriatic arthritis. Pitting of the nails and salmon-colored patches on the skin are also visible.

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Psoriatic Arthritis