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Original Investigation
April 2016

Risk of Major Adverse Cardiovascular Events and All-Cause Mortality in Patients With Hidradenitis Suppurativa

Author Affiliations
  • 1Department of Dermato-Allergology, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
  • 2Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Hellerup, Denmark
  • 3Danish Heart Foundation, Copenhagen, Denmark
  • 4National Institute of Public Health, University of Southern Denmark, Copenhagen

Copyright 2016 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.

JAMA Dermatol. 2016;152(4):429-434. doi:10.1001/jamadermatol.2015.6264

Importance  Hidradenitis suppurativa (HS) is a common inflammatory skin disease. The disease has been associated with cardiovascular (CV) risk factors, but the risk of CV disease in patients with HS is unknown.

Objective  To investigate CV risk in patients with HS.

Design, Setting, and Participants  A population-based cohort study was conducted from January 1, 1997, to December 31, 2011, using individual-level linkage of nationwide administrative registers. In a study population of 35 368 Danish individuals, 5964 patients aged 18 years or older with a hospital-based diagnosis of HS (cases) were matched 1:5 on age, sex, and calendar time with 29 404 individuals serving as controls.

Main Outcomes and Measures  Outcomes were myocardial infarction (MI), stroke, CV-associated death, major adverse CV events (MACEs), and all-cause mortality. Incidence rate ratios (IRRs) were estimated by Poisson regression.

Results  The 5964 patients with HS had a mean (SD) age of 37.7 (11.7) years; 4346 (72.9%) were women. In this sample, a total of 62 (42 749.0 person-years) MIs, 74 (42 647.8 person-years) ischemic strokes, 63 (42 941.7 person-years) CV-associated deaths, 169 (42 463.5 person-years) MACEs, and 231 (42 941.7 person-years) all-cause deaths occurred during follow-up. Adjusted (age, sex, socioeconomic status, smoking, comorbidity, and medication) IRRs (95% CIs) were 1.57 (1.14-2.17) for MI, 1.33 (1.01-1.76) for ischemic stroke, 1.95 (1.42-2.67) for CV-associated death, 1.53 (1.27-1.86) for MACEs, and 1.35 (1.15-1.59) for all-cause mortality. When patients with severe psoriasis were used as controls, the adjusted IRRs in patients with HS were 1.00 (0.74-1.35) for MI, 0.93 (0.71-1.22) for ischemic stroke, 1.58 (1.17-2.12) for CV-associated death, 1.08 (0.90-1.29) for MACEs, and 1.09 (0.94-1.28) for all-cause mortality.

Conclusions and Relevance  Hidradenitis suppurativa was associated with a significantly increased risk of adverse CV outcomes and all-cause mortality independent of measured confounders. The risk of CV-associated death was higher in patients with HS compared with the risk in those with severe psoriasis. The results call for increased awareness of this association and for studies of its clinical consequences.