[Recurrence of meningoencephalitis induced by cotrimoxazole].

Although infrequent, one of the etiological causes of aseptic meningoencephalitis is drug-induced. In our patient, two cases of meningocephalitis took place over a period of six years, together with a meningismus following consumption of trimetroprim-sulphametoxazol (cotrimoxazol). Features of the cases were mental confusion, fever, alterations in the CSF and a benign clinical course, with a high degree of doubt regarding diagnosis, given the similarity of anomalies in the CSF to those present in partially treated bacterian meningitis.