Psychosis is a symptom of a brain disorder or mental illness, which depicts the victim of losing touch of the real world. The symptoms that are greatly attached to this disorder are delusions and hallucinations. On the other hand, a neurosis explains an infection of someone with several mental disorders, such as depression, anxiety, obsessive plus compulsive disorder, hysteria, and phobias. In the case of neurosis, the victim has not lost touch with the real world, and it does not include delusions and hallucinations.
Neurosis is seen as an abnormal adaptive response to a frequently occurring stress, while psychosis is far beyond this. Psychosis renders a severe impairment to day-to-day performances of the patient, while neurosis renders a mild impairment to the day-to-day operations of the victim. A psychosis patient can most likely harm himself or herself, while a neurosis patient would most likely not do that. Psychosis is usually treated with antipsychotic medications, while neurosis does not need that.