Fast Five Quiz: Can You Identify Psoriatic Arthritis and Initiate the Best Treatment Practices?

Herbert S Diamond, MD; Anwar Al Hammadi, MD; Eric M. Ruderman, MD; Marina Magrey, MD


January 25, 2023

Nail psoriasis has a significant effect on patients' psychological and social well-being and leads to functional impairment in daily and occupational activities. Nail involvement occurs in up to 50% of patients with psoriasis vulgaris and up to 80% of patients with PsA. Nail involvement is frequently seen at disease onset, when skin and joint disease begin simultaneously.

According to Sobolewski and colleagues, nail pitting is the most common nail change, with splinter hemorrhages and discoloration being the least common.

Muehrcke lines are typically not associated with PsA.

A direct correlation exists between the number of nail pits and their diagnostic significance.

Learn more about the presentation of PsA.


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