[Acute psychotic access following the administration of isoniazid].

Service de pneumologie, faculté de médecine et de pharmacie de Marrakech, université Cadi Ayyad, hôpital Ibn Nafis, CHU Mohammed VI, Marrakech, Morocco.
Revue de Pneumologie Clinique (Impact Factor: 0.25). 04/2011; 67(2):118-20.
Source: PubMed


Acute psychotic access is defined as the occurrence of a single, acute, and intense psychotic episode in a subject without a neurological or psychiatric history. Isoniazid (INH), a major antibacillar, is the drug most often involved in the occurrence of this psychiatric disorder. However, this side effect is rare and only a few cases have been reported in the literature.
A 57-year-old female patient with diabetes mellitus presented miliary tuberculosis for which an antibacillar treatment was prescribed. Three days later, she presented an acute psychotic access requiring the withdrawal of the INH and the prescription of neuroleptic drugs, without any pyridoxine supplementation. The lab tests were normal. The good clinical evolution after the INH withdrawal confirmed its imputabilty.
Acute psychotic access is a severe and exceptional complication following the administration of INH. Emergency treatment is the only guarantee of a good outcome.

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