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Diagnosis of Undifferentiated Connective Tissue Disease in a Patient With Digital Gangrene and Positive Antinuclear Antibodies.
Curēus 2021 June
The occurrence of ischemia of the digits or digital gangrene is a well-known complication of systemic autoimmune diseases, such as systemic sclerosis, systemic lupus erythematosus, and anti-phospholipid syndrome, among others. The pathophysiological mechanisms are small vessel vasculitis, vasospasm of Raynaud's phenomenon, microthrombi due to antiphospholipid syndrome, and/or accompanying accelerated atherosclerosis. Digital ischemia can also occur in the context of disseminated bacterial infections and sepsis. We present here the case of a patient who had digital ischemia and positive antinuclear antibodies but without well-defined clinical features of a connective tissue disease. A diagnosis of undifferentiated connective tissue disease was made.
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