Periorbital Pyoderma Gangrenosum Associated With a Cocaine-Induced Midline Destructive Lesion: Case Report and Review of the Literature.

A 72-year-old woman with a history of chronic cocaine use presented 9 months after a dog bite with a large facial ulceration and absent sinonasal structures. Biopsies were negative for infectious, vasculitic, or neoplastic pathologies. The patient was lost to follow up for 15 months and returned with a significantly larger lesion despite abstinence from cocaine. Additional inflammatory and infectious workup was negative. Intravenous steroids were administered with clinical improvement. Therefore, she was diagnosed with pyoderma gangrenosum and cocaine-induced midline destructive lesion due to cocaine/levamisole. Pyoderma gangrenosum is a rare dermatologic condition that uncommonly involves the eye and ocular adnexa. Diagnosis involves clinical examination, response to steroids, exclusion of infectious or autoimmune conditions, and identifying potential triggers including cocaine/levamisole. This report highlights a rare presentation of periorbital pyoderma gangrenosum causing cicatricial ectropion associated with concomitant cocaine-induced midline destructive lesion and reviews important aspects of clinical manifestations, diagnosis, and management of pyoderma gangrenosum and cocaine/levamisole autoimmune phenomenon.

Shoji MK ，Staropoli P ，Tran AQ ，Thaller S ，Kirsner RS ，Dubovy SR ，Blessing NW ，Alabiad CR ... -  《-》

Pyoderma gangrenosum associated to the use of cocaine/levamisole. Series of three cases and literature review.

Pyoderma gangrenosum associated to the use of cocaine/levamisole is a rare condition associated to their consumption. Cocaine use is frequent in Colombia, and the substance is contaminated with levamisole, an anthelmintic that increases the psychotropic effects and enhances its side effects. We present three clinical cases of patients with ulcerated lesions, in which the diagnosis was pyoderma gangrenosum secondary to the use of cocaine contaminated with levamisole. This called the attention of the health staff to investigate the abuse of substances in gangrenous pyoderma and also evidence that the interruption of consumption was the basis of management.

Martínez-Gómez M ，Ramírez-Ospina JA ，Ruiz-Restrepo JD ，Velásquez-Lopera MM ... -  《-》

Pyoderma gangrenosum (PG) associated with levamisole-adulterated cocaine: Clinical, serologic, and histopathologic findings in a cohort of patients.

Recently, isolated reports of pyoderma gangrenosum (PG) secondary to levamisole-contaminated cocaine have been described, with similar serologic findings to the vasculopathic presentation. We sought to describe clinical, histopathological, and serologic findings in 8 patients with PG associated with levamisole-contaminated cocaine. Eight consecutive patients presenting with this disease spanning the period from 2011 to 2015 were included for the cohort. Observed variables included: lesion distribution, morphology, serologic titers, and histopathologic evaluation for vasculitis and vasculopathy. All patients reported cocaine exposure prior to the onset of lesions resembling PG. Lesions appeared primarily on the upper (6 of 8 patients) and lower (all 8 patients) extremities. Most patients demonstrated elevated titers for p-ANCA and antiphospholipid antibodies, and a diffuse dermal infiltrate dominated by neutrophils was seen in all biopsy specimens. Lesions improved or remained stable with conservative management or short courses of steroids, and recurrence was only noted on re-exposure to adulterated cocaine. The study is limited by sample size. PG may occur after exposure to levamisole-adulterated cocaine. Clinical and histopathological findings resemble those seen in conventional forms of PG, whereas serologic findings mirror those seen in other levamisole-associated vasculopathic or vasculitic eruptions. Cocaine avoidance represents a cornerstone of management in these patients.

Jeong HS ，Layher H ，Cao L ，Vandergriff T ，Dominguez AR ... -  《-》

Pyoderma gangrenosum: a possible cutaneous complication of levamisole-tainted cocaine abuse.

Keith PJ ，Joyce JC ，Wilson BD 《-》

[Multilocular pyoderma gangrenosum from levamisole adulterated cocaine].

Tasdogan A ，Dissemond J 《-》