[Adverse reactions of antituberculous agents].

We experienced adverse reactions to antituberculous agents in 17 patients (53%) out of 32 patients treated for tuberculosis and nontuberculous pulmonary mycobacteriosis. Side effects were seen in 15 patients (47%), and abnormal laboratory findings were observed in 9 patients (28%). Most side effects mostly appeared within two weeks after the administration, and were of short duration. However, there were also side effects such as neurological symptoms, arthralgia, and general fatigue which appeared after one month and lasted for a long duration. These results suggest that careful observation for adverse reactions in antituberculous treatment is required. Finally, 11 patients with adverse reactions were successfully treated by changing antituberculous agents or readministration after temporary stop of the administration. Four patients improved even with continued use of agents causing side-effects. However, in the case of two patients who had to change antituberculous agents, adverse reactions to all antituberculous agents appeared and the treatment for tuberculosis and nontuberculous pulmonary mycobacteriosis had to be stopped.