Throat Infections are Associated with Exacerbation in a Substantial Proportion of Patients with Chronic Plaque Psoriasis
Ragna H. Thorleifsdottir, Jenna H. Eysteinsdóttir, Jón H. Olafsson, Martin I. Sigurdsson, Andrew Johnston, Helgi Valdimarsson, Bardur Sigurgeirsson
Streptococcal throat infections are known to trigger or exacerbate psoriasis, and several studies support the benefit of tonsillectomy. To evaluate the potential of tonsillectomy as a treatment, we used a retrospective study-specific questionnaire to assess the proportion of psoriasis patients with sore throat-associated psoriasis exacerbations. Our survey sampled 275 psoriasis patients. Of patients with plaque psoriasis, 42% reported sore throat-associated psoriasis exacerbations, and of patients with confirmed streptococcal infections, 72% reported aggravation. Notably, women and patients with early onset psoriasis were more likely to report psoriasis exacerbation after a sore throat (p?0.001, p?=?0.046, respectively). Other psoriasis aggravation factors were more common in patients with sore throat-associated exacerbations (p?0.01). Of tonsillectomized patients, 49% reported subsequent improvement and had more frequent sore throat-associated aggravation of psoriasis than patients who did not improve after tonsillectomy (p?=?0.015). These findings suggest a closer association between sore throats, streptococcal throat infections and plaque psoriasis than reported previously.