Psoriasis as a comorbidity of hidradenitis suppurativa

Background Hidradenitis suppurativa (HS) and psoriasis (PSO) appear to share important pathogenic elements; in spite of this, the co‐occurrence of the two has been widely unexplored. Methods To explore the co‐occurrence of HS and PSO, we recorded the number of patients attending the outpatient clinic at the Department of Dermatology, Zealand University Hospital, Roskilde, Denmark, for the ICD10 diagnosis HS (DL73.2) or PSO (DL40.0, DL40.3,...