Sleep disturbance, anxiety, delirium, hallucinations, depressed mood, and paranoid delusions may be present.81,82 Lethargy and coma occur rarely.
Other psychiatric symptoms such as anxiety, restlessness, insomnia, depression, mania, hallucinations, delusions, confusion, catatonia, and psychosis may occur.  Underlying
Rarely these are more severe with psychosis, delusions and hallucinations. Mental changes resolve completely on remission.