How are altered or heightened states of consciousness and psychosis different?

Psychosis... a term used when people have a break from reality -- they may have delusions (beliefs that are clearly false) or hallucinations (usually auditory voices) or be very paranoid. Psychotic conditions include schizophrenia, bipolar/depression with psychosis or drug-induced psychosis. I am not sure what you mean by "...heightened states of consciousness".