Clinical Edge

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Increased Psoriasis Incidence in MS

Mult Scler Relat Disord; 2017 Apr; Marrie, et al

Psoriasis incidence and prevalence are higher in the multiple sclerosis (MS) population than in a matched population, a recent study found. Researchers used population-based administrative data to identify 4,911 persons with MS and 23,274 age- , sex- , and geographically-matched controls aged ≥20 years from 1998 through 2008. They found:

  • In 2008, the crude incidence of psoriasis per 100,000 person-years was 466.7 in the MS population, and 221.3 in the matched population.
  • The crude prevalence of psoriasis per 100,000 persons was 4,666.1 in the MS population, and 3,313.5 in the matched population.
  • The incidence and prevalence of psoriasis rose slightly over time.
  • After adjusting for sex, age at the index date, socioeconomic status, and physician visits, the risk of incident psoriasis was 54% higher in the MS population.

Citation:

Marrie RA, Patten SB, Tremlett H, Wolfson C, Leung S, Fisk JD. Increased incidence and prevalence of psoriasis in multiple sclerosis. Mult Scler Relat Disord. 2017;13:81-86. doi:10.1016/j.msard.2017.02.012.