Verrucous psoriasis: A rare variant of psoriasis masquerading as verrucous carcinoma.
Garvie K, McGinley Simpson M, Logemann N, Lackey J. JAAD Case Rep. 2019 Aug 5;5(8):723-725.
Verrucous psoriasis is a rare variant of psoriasis characterized by hyperkeratotic, papillomatous plaques that clinically resemble verrucous carcinoma in lesion appearance and distribution. It is amenable to medical treatments. Conversely, verrucous carcinoma, a rare subtype of well-differentiated squamous cell carcinoma, is treated with surgical excision. Histologically, they may be difficult to differentiate. This case report presents a patient with verrucous psoriasis of the heal that was initially diagnosed as verrucous carcinoma and excised.
Re-Categorization of Psoriasis Severity: Delphi Consensus from the International Psoriasis Council.
Strober B, Ryan C, van de Kerkhof P, et al. J Am Acad Dermatol. 2019 Aug 16.
This consensus statement on the classification of psoriasis severity preferentially ranked seven severity definitions. This most preferred statement rejects the mild, moderate and severe categories in favor of a dichotomous definition: Psoriasis patients should be classified as either candidates for topical therapy or candidates for systemic therapy; the latter are patients who meet at least one of the following criteria: 1) BSA > 10%, 2) Disease involving special areas, 3) Failure of topical therapy.
Gluten intake and risk of psoriasis, psoriatic arthritis and atopic dermatitis among US women.
Drucker AM, Qureshi AA, Thompson JM, Li T, Cho E. J Am Acad Dermatol. 2019 Aug 9.
Associations between gluten intake and psoriasis, psoriatic arthritis and atopic dermatitis are poorly understood. Gluten content of participants' diet was calculated every four years using food frequency questionnaires. Disease outcomes were assessed by self-report and subsequently validated.
Psoriasis and Mortality in the US: Data from the National Health and Nutrition Examination Survey.
Semenov YR, Herbosa CM, Rogers AT, et al. J Am Acad Dermatol. 2019 Aug 12.
In this retrospective population-based cohort study of adults and adolescents > 10 years (n=13,031) who participated in National Health and Nutrition Examination Surveys (2003-2006; 2009-2010), psoriasis was present in 2.7% of the study population. Over an average 52.3 months median follow-up, psoriasis was significantly associated with increased mortality risk. This relationship is partially mediated by an increased prevalence of cardiovascular, infectious, and neoplastic disorders seen among psoriatics.
Ostraceous Psoriasis Presenting as Koebner Phenomenon in a Tattoo.
Reinhart J, Willett M, Gibbs N. J Drugs Dermatol . 2019 Aug 1;18(8):825-826.
Psoriasis ostracea is defined as having pronounced adherent scales resembling an oyster shell. Many ostraceous cases occur as generalized outbreaks in patients with long-standing history of psoriasis. Rarely does this variant occur as a direct flare from a cutaneous insult. In these situations, when a pre-existing dermatosis appears in response to a traumatic insult to skin, the process is referred to as the Koebner phenomenon. In addition to lichen planus and vitiligo, psoriasis is a commonly known condition that can present as a Koebner reaction. In this atypical case, the authors present a 21-year-old male with remarkable ostraceous psoriatic lesions precipitated by an upper arm tattoo, demonstrating the Koebner phenomenon.