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Erythromelalgia is an infrequent syndrome with a profound impact on quality of life. Its management is usually challenging and multiple treatments have been reported with variable response rates. To the best of our knowledge, we present the first case of erythromelalgia successfully treated with topical oxymetazoline.

Alkaptonuria is a rare autosomal recessive metabolic disorder with wide systemic involvement including pigment deposition. We present an unusual case diagnosed by an image obtained via telemedicine showing pigment deposition in the earlobe. We highlight how this clue may allow prompt diagnosis of alkaptonuria and prevent disease progression. Click https://www.wileyhealthlearning.com/#/online-courses/5da3bb51-40d1-4d42-9c4b-610d68106e25 for the corresponding questions to this CME article.

Interstitial granulomatous dermatitis (IGD) is a rare dermatosis generally seen in the setting of rheumatic diseases, but also hematological disorders, internal malignances, infections, or drug induced. Herein, we report an exceptional case of an IGD with a clear chronological association with tocilizumab onset and cessation in a patient with adult-onset Still's disease. We review the granulomatous cutaneous reactions so far reported with this novel therapy: sarcoidosis, granuloma annulare, and IGD. Tocilizumab is a humanized anti-interleukin 6 receptor monoclonal antibody useful for the treatment of various systemic inflammatory disorders. Lately, it has found useful also for granulomatous diseases such as giant cell arteritis and even a promising response in IGD. Therefore, we believe our case adds the possibility of an IGD presenting as a paradoxical reaction.

Resumen Los farmacos inhibidores del factor de necrosis tumoral alfa (anti-TNF alfa) son ampliamente utilizados en diversas especialidades medicas. El principal efecto adverso de estos farmacos es el aumento del riesgo de infecciones. Presentamos el caso de un varon de 30 anos con espondilitis anquilosante, en tratamiento desde hacia 2 semanas con golimumab, que consulta por lesiones asalmonadas en tronco, palmas y plantas de 10 dias de evolucion. Con la sospecha de un secundarismo luetico se solicitaron pruebas treponemicas y no treponemicas que confirmaron el diagnostico. Asimismo se solicito una puncion lumbar, aunque no existia sintomatologia neurologica, para descartar neurosifilis. Los casos de sifilis en pacientes en tratamiento con anti-TNF alfa son excepcionales en la literatura y no hay protocolos establecidos que nos guien sobre como actuar ante esta situacion.

Subungual squamous cell carcinoma is very rare, but it is the most frequent primary malignant tumor of the nail bed. Therefore, its diagnosis and treatment are crucial to ensure a favorable prognosis. We present the sonographic findings in a case of a subungual squamous cell carcinoma. © 2017 Wiley Periodicals, Inc. J Clin Ultrasound 46:212-214, 2018.

Palmoplantar epidermoid cysts can range in clinical presentation from an asymptomatic slowly enlarging mass to a painful nodule. We report two cases: an epidermoid cyst on the sole and another on the palm. This article reviews the possible etiology, diagnosis, and prognosis of palmoplantar epidermoid cysts.

Inhibitors of tumor necrosis factor-alpha (anti-TNF-alpha) are widely used in different medical specialties. The main adverse effect of these agents is the increased risk of infection. We report the case of a 30-year-old man with ankylosing spondylitis who had begun receiving golimumab two weeks earlier. He presented with a 10-day history of salmon-colored lesions on trunk, palms and soles. The clinical suspicion was secondary syphilis. Treponemal and nontreponemal tests confirmed the diagnosis of syphilis. Lumbar puncture was also performed, although there was no neurological involvement, to rule out neurosyphilis. Cases of syphilis in patients in treatment with TNF-alpha inhibitors are uncommon in the literature and there are no established protocols.

Kaposi's sarcoma (KS) associated with AIDS (AIDS-KS) is the most prevalent neoplasia among patients with AIDS. Its incidence has decreased dramatically in recent years due to the widespread use of highly active antiretroviral therapy (HAART). Paradoxically, in relation to the introduction of HAART it may occur a worsening or development of AIDS-KS despite the improvement of the immune function. This unusual process is called immune reconstitution syndrome in Kaposi's sarcoma (IRIS-KS) and should not be confused with a failure of HAART. Early identification of AIDS-KS and previous or combined use of chemotherapy with HAART appears to be the most effective treatment to prevent the consequences of IRIS-SK.