Anticonvulsant hypersensitivity syndrome presenting as aseptic meningitis.

Anticonvulsant hypersensitivity syndrome (AHS) is a rare, potentially life-threatening drug reaction which usually occurs after exposure to aromatic antiepileptics. AHS secondary to non-aromatic antiepileptics is even more rare and there are only few case reports of AHS presenting as aseptic meningitis. We present the case of a 48-year-old patient who presented with meningism within 3 weeks of adding lamotrigine for control of her juvenile myoclonic epilepsy. When lamotrigine was restarted 2 weeks later she developed similar but more severe symptoms which resolved on stopping lamotrigine. Our patient was subsequently rendered seizure free on levetiracetam which has not so far been linked with this syndrome. It is important to be aware of this life-threatening complication associated with the use of antiepileptics.