Erythema elevatum diutinum in a patient with rheumatoid arthritis.

Erythema elevatum diutinum (EED) is a rare cutaneous neutrophilic vasculitis with many associated diseases reported in the literature. We report a 65-year-old woman with painful and itchy lesions on her elbows, hands, knees, and foot for a year. Histopathologic examination confirmed the diagnosis of erythema elevatum diutinum and treatment with dapsone produced significant clinical improvement within few weeks. Erythema elevatum diutinum is a rare disease that should be considered in patients with violaceous nodular plaques located over the extensor regions of the limbs. Knowledge of this unusual pathology and its association helps to avoid misdiagnosis and late treatment.

Psoriasiform keratosis - case report.

Psoriasiform Keratosis is a rare clinic entity. The etiopathogenesis remains unknown and the disease is characterized by a solitary, scaly or keratotic papule, or plaque mainly located on the extremities. Histopathological features closely resemble those of psoriasis. We report the case of a 70-year-old woman presenting a solitary and asymptomatic keratotic plaque, located on the back of the left leg, unresponsive to topical corticosteroids. We performed an excisional biopsy and histopathology was consistent with psoriasiform keratosis.

Psoriasiform Keratosis - Case report

Psoriasiform Keratosis is a rare clinic entity. The etiopathogenesis remains unknown and the disease is characterized by a solitary, scaly or keratotic papule, or plaque mainly located on the extremities. Histopathological features closely resemble those of psoriasis. We report the case of a 70-year-old woman presenting a solitary and asymptomatic keratotic plaque, located on the back of the left leg, unresponsive to topical corticosteroids. We performed an excisional biopsy and histopathology was consistent with psoriasiform keratosis.

Pyoderma gangrenosum in a newborn--case report.

Pyoderma gangrenosum is a rare, inflammatory, chronic and recurrent disease of unknown etiology, characterized by noninfectious, necrotizing and painful cutaneous ulcers. Usually it affects adults aged between 25 and 54 years old and rarely children (less than 4%), in which it mainly affects the head, face, buttocks, genital and perianal region. The disease presents a quick response to systemic corticosteroids. We report a case of a newborn with hemorrhagic and necrotic ulcers, distributed in the abdomen, buttocks and genital region with rapid and effective response to oral prednisone.

Pyoderma gangrenosum in a newborn - case report / Pioderma gangrenoso em recem - nascido - relato de caso

Pyoderma gangrenosum is a rare, inflammatory, chronic and recurrent disease of unknown etiology, characterized by noninfectious, necrotizing and painful cutaneous ulcers. Usually it affects adults aged between 25 and 54 years old and rarely children (less than 4%), in which it mainly affects the head, face, buttocks, genital and perianal region. The disease presents a quick response to systemic corticosteroids. We report a case of a newborn with hemorrhagic and necrotic ulcers, distributed in the abdomen, buttocks and genital region with rapid and effective response to oral prednisone.

O Pioderma gangrenoso é uma doença inflamatória rara, crônica e recorrente, de etiopatogenia desconhecida, caracterizada por uma ulceração não-infecciosa, necrotizante e dolorosa da pele. Geralmente, afeta adultos na faixa de 25 a 54 anos e raramente crianças (menos de 4%), nestes acomete preferencialmente cabeça e face, nádegas, região perianal e genital. Apresenta rápida resposta à corticoterapia sistêmica. Relata-se um caso de recém-nascida com lesões ulceradas de pioderma gangrenoso de fundo hemorrágico e necrótico distribuídas em abdômen, região genital e glútea com resposta rápida e efetiva à prednisona oral.