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Prurigo nodularis is an itchy skin disease with unknown epidemiology. This study aimed to describe the epidemiology of prurigo nodularis compared with that of psoriasis. The German sickness fund claims database, with 2,783,175 continuously insured patients, included 1,720 patients diagnosed with prurigo nodularis and 51,390 with psoriasis. Patients with prurigo nodularis were averagely 8 years older than psoriasis patients and more often were women ( p < 0.001). Annual incidence was a constant 0.02% in prurigo nodularis, and decreased steadily from 0.53 to 0.42% in psoriasis; cumulative incidence was 0.1% for prurigo nodularis and 1.9% for psoriasis. Prevalence was 0.1% for prurigo nodularis and 4.7% for psoriasis, with a one-year mortality of 5.4% for prurigo nodularis and 1.2% for psoriasis ( p < 0.001). The most frequent pre-existing comorbidities in patients with prurigo nodularis were inflammatory dermatoses and depression. This epidemiological study found a low prevalence of prurigo nodularis, manifesting different demographics and comorbidities compared with psoriasis.

trial achieved positive results of reduced itch intensity and other supporting efficacy endpoints in prurigo nodularis patients New Haven, CT, October 13, 2016 -Trevi Therapeutics, Inc. ("Trevi" or the "Company"), a late-stage clinical development company developing oral Nalbuphine ® ER for chronic pruritus conditions, today announced positive results from its Phase 2 trial for the treatment of moderate to severe prurigo nodularis. Prurigo nodularis (PN), a severely pruritic dermatological condition characterized by itchy skin papules and nodules, has significant impact on quality of life and has no approved therapies. Trevi also previously reported statistically significant results from a robust Phase 2/3 trial with Nalbuphine ER in hemodialysis patients with uremic pruritus.

Background: Randomized controlled studies of combination therapies in rosacea are limited.Objective: Evaluate the efficacy and safety of combining ivermectin 1% cream (IVM) and doxycycline 40-mg modified-release capsules (ie, 30-mg immediate-release and 10-mg delayed-release beads) (DMR) versus IVM and placebo for treatment of severe rosacea.

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