Eosinophilic meningoencephalitis: psychiatric presentation and treatment.

Eosinophilic meningoencephalitis (EM) is usually a self-limited neurological illness commonly accompanied by a variety of neurological symptoms. The presence of acute psychotic symptoms in EM, however, has not previously been reported, and there is no literature to guide its treatment and management. In this case report, the onset of psychotic symptoms in a hypoactive delirium and their significant improvement following the administration of atypical antipsychotics are described in a boy with EM. This case report demonstrates the efficacy and safety of antipsychotic agents during the acute phase of meningoencephalitis.