A 29-year-old woman presented with a witnessed convulsion, with semiology consistent with a focal-to-bilateral tonic-clonic seizure. Routine EEG supported a syndromic diagnosis of idiopathic generalised epilepsy with photosensitivity. We discuss the clinical utility of seizure semiology, highlighting the caveat that over-reliance or sole reliance on the ictal semiology may result in an erroneous diagnosis of focal epilepsy in someone with a generalised epilepsy.
A 66-year-old woman reported 10 days of generalised weakness, falls and memory 'glitches'. She had developed left-sided ophthalmic herpes zoster 3 months before but was otherwise well. MR scan of brain showed acute left-sided ischaemic strokes and CT cerebral angiogram identified marked stenoses of the left anterior and middle cerebral arteries. We suspected varicella-zoster virus vasculopathy, confirmed by cerebrospinal fluid analysis. Initially she had further ischaemic strokes despite intravenous acyclovir, prednisone, aspirin and clopidogrel. However, after prolonged acyclovir and prednisone, there were no new infarcts though imaging of left anterior and middle cerebral artery vessel walls showed persistent inflammation. Varicella zoster vasculopathy can cause recurrent ischaemic strokes, even in immunocompetent people with no cardiovascular risk factors, and despite long-term antiviral therapy.
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