Allergic contact dermatitis caused by timolol eyedrop application for classic Kaposi sarcoma.

Topical timolol has been shown to be effective on treatment of Kaposi sarcoma. We present the case of a 72-year-old man with classic Kaposi sarcoma on upper limbs, treated with topical timolol 0.5% twice a day with a pruritic eruption on areas of application.

Facial and axillary apocrine chromhidrosis.

Apocrine chromhidrosis is a rare, chronic, idiopathic disorder, characterized by the excretion of pigmented sweat. A 26-year-old woman presented with a 3-year history of dark blue secretions on bilateral malar cheeks. On examination, upon pressure on the cheeks, a dark blue fluid was expressed, which appeared to arise primarily from the follicle. The patient had not appreciated it, but on examination of her axillae, a very subtle blue coloring was observed. Histopathologic examination revealed apocrine glands in the deep reticular dermis. Bluish cytoplasmic granules were observed in the apocrine epithelium lining, which correspond to lipofuscin granules. The diagnosis of apocrine cromhidrosis was made. We began treatment with 20 percent aluminum chloride hexahydrate solution and capsaicin cream with poor tolerance. Finally, we treated with botulinum toxin type A with a successful response. We report a case of facial and axillary apocrine cromhidrosis with good response to botulinum toxin type A.

Regressing eruptive disseminated pigmented Spitz (Reed) nevi in a young adult.

Eruptive disseminated Spitz nevi is a rare clinical presentation that features an abrupt widespread eruption of Spitz nevi. Spontaneous regression of these nevi has been rarely reported in previous literature. The authors of the present study report the case of a 30-year-old man who presented eruptive disseminated Spitz nevi that appeared within a week and started regression in the following years.

Superficial angiomyxoma with trichofolliculoma.

We report a case of a superficial angiomyxoma with a trichofolliculoma, found on the trunk of a 51-year-old man. The tumor, measuring 4 cm in maximum diameter and located in the reticular dermis and subcutaneous tissue, was composed of a conglomerate of multiple myxomatous nodules with mucinous stroma and stellate cells. Thin-walled blood vessels were prominent. The histologic examination also revealed abortive hair follicles radiating from the wall of a keratin-filled cyst. Immunohistologically, the stromal cells were positive for vimentin but negative for S-100, smooth muscle a-actin, and desmin. With these findings, the diagnosis of superficial angiomyxoma with trichofolliculoma was made.

Regressing eruptive disseminated pigmented Spitz (Reed) nevi in a young adults

Abstract Eruptive disseminated Spitz nevi is a rare clinical presentation that features an abrupt widespread eruption of Spitz nevi. Spontaneous regression of these nevi has been rarely reported in previous literature. The authors of the present study report the case of a 30-year-old man who presented eruptive disseminated Spitz nevi that appeared within a week and started regression in the following years.

Dermatitis artefacta?

A 35-year-old man presented with a 2-month history of intensely pruritic excoriated and crusted linear lesions on the dorsa of the left hand and left forearm (Fig 1). The patient had worked in construction for 2 years, and his job consisted mainly in covering the facades of buildings with cement. The patient was right-handed and used a black rubber glove as a protective measure only on his left hand (Fig 2). He reported that the lesions resolved partially during holidays and weekends and clearly flared in association with his work. There was no history of atopic dermatitis, drug use, or intolerance to metals, rubber, or fruits. On physical examination, linear excoriations with crusts were observed on the dorsa of the left hand, extending to the ventral and dorsal aspects of the forearm, involving the whole area that was in contact with the glove. Lichenified erythematous plaques and excoriations on the dorsal surface of the metacarpophalangeal joints and scaly lesions on the dorsal surfaces of the fingers were also present. On the palm, only discrete hyperkeratosis was seen. The right hand and forearm were free of lesions. He complained of intense pruritus when wearing the rubber glove and admitted to continuous scratching to relieve his discomfort, inducing the linear and excoriated lesions. Treatment with topical corticosteroids was initiated, with progressive resolution of the lesions.

Sarcoidosis cicatrizal / Scar Sarcoidosis

La afectación cutánea en forma de sarcoidosis cicatrizal representa una de las formas más inusuales de la sarcoidosis cutánea. Se presenta el caso de una mujer de 56 años con cambios en antiguas cicatrices como forma de inicio de una sarcoidosis sistémica. La paciente presentaba infiltración violácea en algunas de sus antiguas cicatrices, previamente estables. Mediante estudio histopatológico se observaron granulomas de células epitelioides en dermis superficial y parte de dermis reticular. Las lesiones fueron progresando y afectaron también piel sana coincidiendo con el desarrollo de una uveítis anterior bilateral. El cuadro se controló con corticoides oftálmicos tópicos y cloroquina. La patogenia de sarcoidosis cicatrizal parece detenerse a una reacción de hipersensibilidad en la que el macrófago previamente estimulado por una sustancia inerte contaminante de la herida se reactiva por la sarcoidosis, infiltrando así dichas cicatrices antiguas (AU)

Pénfigo IgA / IgA pemphigus

El pénfigo IgA es una dermatosis ampollosa, caracterizada por la presencia de lesiones vesiculosas y pustulosas, junto con depósito de IgA en los espacios intercelulares de la epidermis superficial. Se distinguen dos tipos de pénfigo IgA: el tipo dermatosis pustulosa subcórnea y el tipo dermatosis IgA neutrofílica intraepidérmica. La dapsona es el tratamiento de elección en el pénfigo IgA, pero en ocasiones hay que añadir acitretín, colchicina, isotretinoína o corticoides sistémicos.Aportamos 2 casos de pénfigo IgA del tipo dermatosis pustulosa subcórnea (AU)