Quick answer
Psychosis involves a loss of contact with reality — delusions or hallucinations. Neurosis is an older term for persistent distress or anxiety where that contact remains intact. Neurosis has largely been dropped from clinical use; psychosis remains a current and precise term.
The core difference
The classic dividing line is whether contact with reality is retained.
- neurosis — distress, anxiety or obsessive patterns, with reality testing intact. Largely historical as a clinical term.
- psychosis — loss of contact with reality: delusions, hallucinations, disordered thinking.
Why neurosis fell out of use
It came from psychoanalytic tradition and covered too broad a range to be diagnostically useful. Modern manuals replaced it with specific categories — anxiety disorders, obsessive-compulsive disorder and others. Neurotic survives in everyday speech as a mild, usually joking description, which is a long way from its clinical past.
This page explains the words. It is not a diagnostic guide.
Frequently asked questions
Is neurosis still a diagnosis?
No. It has been replaced by more specific categories such as anxiety disorders. Psychosis remains a current clinical term.
What defines psychosis?
A loss of contact with reality — typically delusions, hallucinations or seriously disordered thinking.
What does neurotic mean in everyday speech?
Anxious or fussy, usually said lightly. That casual use is far removed from the term's clinical history.
