Agreement on classification of clinical photographs of pigmentary lesions: exercise after a training course with young dermatologists.

Smartphone apps may help promoting the early diagnosis of melanoma. The reliability of specialist judgment on lesions should be assessed. Hereby, we evaluated the agreement of 6 young dermatologists, after a specific training. Clinical judgment was evaluated during 2 online sessions, 1 month apart, on a series of 45 pigmentary lesions. Lesions were classified as highly suspicious, suspicious, non-suspicious or not assessable. Cohen's and Fleiss' kappa were used to calculate intra- and inter-rater agreement. The overall intra-rater agreement was 0.42 (95% confidence interval - CI: 0.33-0.50), varying between 0.12-0.59 on single raters. The inter-rater agreement during the first phase was 0.29 (95% CI: 0.24-0.34). When considering the agreement for each category of judgment, kappa varied from 0.19 for not assessable to 0.48 for highly suspicious lesions. Similar results were obtained in the second exercise. The study showed a less than satisfactory agreement among young dermatologists. Our data point to the need for improving the reliability of the clinical diagnoses of melanoma especially when assessing small lesions and when dealing with thin melanomas at a population level.

Erythrodermic psoriasis improved by Tildrakizumab.

Erythrodermic psoriasis (EP), clinically defined as prominent erythema and scaling affecting almost the entire skin surface, is a severe form and a rare variant of psoriasis. The treatment may require hospital admission with monitoring of vital signs and use of immunosuppressive drugs. Newer biological drugs, including anti-TNF, anti-IL- 17, and anti-IL-23 agents, even if not specifically developed for the treatment of erythrodermic psoriasis, have been used successfully in single cases or in small case series. Tildrakizumab is an IgG1Ò¡ monoclonal antibody that selectively binds to the p19 subunit thus inhibiting the interaction of interleukin 23 (IL-23) with its receptor and suppressing the release of IL-23 mediated proinflammatory cytokines. We present a case of EP in an obese man (Body mass index 35.2) successfully and safely treated with Tildrakizumab.

Keratolysis exfoliativa-like eruption induced by ranolazine.

Dermatoses affecting palms may represent a dermatologic challenge from both the diagnostic, and therapeutic point of view. Patients with supposedly occupational dermatitis can spend months or even years in a frustrating attempt to avoid contact with possible irritants or allergens. To underline the importance of a thorough unbiased analysis of the patient's history and clinical features, we present the iconic case of a bricklayer affected by a chronic, disabling desquamation of palms which in the end was classified as keratolysis exfoliativa (KE) attributed to ranolazine-intake, an antianginal drug. To the best of our knowledge, this specific adverse effect of druginduced KE of palms has never been reported before in association with ranolazine.