Psychotoxic effects of ofloxacin

Two cases of organic psychosis, induced by the new chemotherapeutic agent ofloxacin (Tarivid), are described. According to DSM-III-R and ICD 10 (draft, 1987) both cases present as different, yet well-defined diagnostic categories: the new diagnostic systems appear to be superior and markedly more differentiated than ICD-9, since they provide a more exact and comprehensive description and more specific diagnostic allocation, especially in substance-specific syndromes. The possible involvement of GABAergic and monaminergic mechanisms in this psychotic symptomatology and their relationship to hypersynchronous states are discussed in detail.