Neurological Causes
Some abnormalities in the brain would also lead to obsessive-compulsive disorder in many people. Modern brain imaging techniques show that people with this condition might have special activities in some particular parts of their brain, which are quite different from normal people. A possible explanation might come from the imbalances in glutamate and serotonin. Those brain substances play a key role in normal neurological activities. Thus, a problem occurs would lead to this mental issue. [9]
