Mental disturbance in pulmonary tuberculosis

Five cases of mental disturbance associated with pulmonary tuberculosis are described and an attempt made to elucidate the connection between the two conditions. In the first three it is concluded that a mental instability was present previously and that the tuberculosis was merely the means of bringing it to light and was in no way the direct cause; while in the remaining two cases the tuberculous tox˦mia and their own special circumstances combined to produce an acute confusional insanity which cleared up with an improvement in their physical condition.