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Microscopic polyangiitis (MPA) is a systemic small vessel vasculitis, which, although primarily associated with necrotizing and crescentic glomerulonephritis and pulmonary capillaritis, often has cutaneous and musculoskeltal features. Although the skin is affected in 20–70% of patients, the precise description has been limited. This retrospective study analyzed clinical manifestations in patients of MPA with skin eruptions. [ABSTRACT FROM AUTHOR]

We report a case of a 70-year-old man with dermatomyositis complicated by esophageal involvement resistant to corticosteroid therapy. It had serious and potentially life-threatening implications, resulting in impossible oral feeding. This condition was successfully resolved by administration of cyclosporine A. [ABSTRACT FROM AUTHOR]

The article discusses the case of a 79-year-old woman with myasthenia gravis (MG) who developed Churg-Strauss syndrome (CSS), and notes that treatment with tacrolimus was effective in controlling CSS. It explains that CSS patients exhibit pulmonary and systemic small-vessel necrotizing vasculitis, and that the condition occurs in those with asthma or allergic rhinitis. Skin lesions are said to occur in 40 to 75% of CSS patients.