Sneddon syndrome is a type of systemic non-inflammatory vasculopathy characterised by livedo reticularis and progressive and occlusive cerebrovascular thrombosis involving the medium-sized arteries.
- livedo reticularis as a skin manifestation
- progressive cerebral strokes and haemorrhage
- cerebral dysfunction
It is characterised by intimal hyperplasia of medium-sized arteries with unknown aetiology. Half of the patients also have antiphospholipid syndrome. Skin biopsy is diagnostic.
CT and MRI show non-specific infarcts and cortical atrophy. Angiography shows stenosis or occlusion of medium-sized arteries, and large networks of collateral small vessels.
Treatment and prognosis
There is no effective treatment to control disease progression but long-term antiplatelet therapy and anticoagulation are commonly used in cases with cerebral manifestations.
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