P124 Arterial ischaemic stoke secondary to varicella vasculitis

A 5 year old boy presented to the Emergency Department with a 1 day history of evolving right sided hemiparesis and drooling on a background of primary varicella infection 3 months previously. No other significant medical history. No significant family history. On examination GSC 15/15, vitals were stable. Cardiovascular, respiratory, gastrointestinal, ENT examinations were unremarkable. Neurological examination; speech was normal, on mobilizing hisright leg dragged along floor. No ataxia or foot drop were noted. Cranial nerves II – XII grossly intact. Muscle bulk, tone and reflexes all normal. Reduced power 3/5 in the right upper and lower limbs. Investigations FBC, U+E, LFT, Coagulation all normal. CSF VZA DNA detected, VZV IgG>100 mIU/ml. CT and MRA brain No abnormality identified. MRI Brain: Acute Left sided ischemic stroke – affecting the left subinsular region and the posterior limb ofthe left internal capsule. Diagnosis Arterial ischaemic stoke secondary to varicella vasculitis