| Sneddon | I.B., 20th century English dermatologist. See: Sneddon's syndrome, Sneddon-Wilkinson disease. (05 Mar 2000) |
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| sneddon syndrome | <syndrome> A syndrome of livedo reticularis and cerebrovascular lesions involving all the extremities and the trunk, worsening in cold weather and during the acute phase of neurological complications. Chronic ischemia of the extremities is present in all cases. Adventitial fibrosis, thrombosis, and changes in the media are the principal pathological changes in the digital arteries. Neurological manifestations consist of stroke, transient ischemic attacks, epileptic seizures, and dementia. (12 Dec 1998) |
| Sneddon's syndrome | <syndrome> A cerebral arteriopathy of unknown aetiology, characterised by noninflammatory intimal hyperplasia of medium-sized vessels associated with diffuse cutaneous livedo reticularis. (05 Mar 2000) |
| Sneddon-Wilkinson disease | A pruritic chronic annular eruption of sterile vesicles and pustules beneath the stratum corneum; bears a considerable clinical resemblance to dermatitis herpetiformis. Synonym: Sneddon-Wilkinson disease, subcorneal pustular dermatitis. (05 Mar 2000) |