Multiple perineuriomatous melanocytic nevi.

Perineuriomatous differentiation in solitary cutaneous melanocytic nevi has been described. We present an unusual case of a patient with multiple such perineuriomatous nevi. This presentation raises the possibility that a germline mutation may be responsible for the pathogenesis of these unusual lesions.

Influenza infection triggers disease in a genetic model of experimental autoimmune encephalomyelitis.

Multiple sclerosis (MS) is an autoimmune disease of the central nervous system. Most MS patients experience periods of symptom exacerbation (relapses) followed by periods of partial recovery (remission). Interestingly, upper-respiratory viral infections increase the risk for relapse.