Doctors usually prescribe neuroleptic medications, also known as dopamine antagonists, for visual hallucinations caused by a primary psychotic illness, according to the U.S. National Library of Medicine. The medication is also effective at managing delirium, an underlying cause of visual hallucinations.
The treatment for hallucinations varies depending on the underlying cause of the hallucinations, explains WebMD. Hallucination causes include schizophrenia, Parkinson's disease, Alzheimer's disease and other forms of dementia. Additional causes include migraines, brain tumors, epilepsy and Charles Bonnet syndrome. Doctors prescribe anticonvulsant drugs to treat epilepsy, while surgery or radiation treat brain tumors. Therapy can also help individuals manage hallucination symptoms.