(by alshepmcr on Flickr.)
Psychosis is a generic psychiatric term for a mental state often described as involving a “loss of contact with reality”. Psychiatrists attribute an excess in dopaminergic signalling is traditionally to be linked to the positive symptoms of psychosis, especially those of schizophrenia.
People experiencing psychosis may exhibit some personality changes and thought disorder. Depending on its severity, this may be accompanied by unusual or bizarre behavior, as well as difficulty with social interaction and impairment in carrying out daily life activities.