What is the difference between Neurosis and Psychosis?
Neurosis is a relatively mild mental illness while psychosis is a severe mental disorder.
Let us begin with the short explanation about neurosis. It is an emotional illness in which a person experiences strong feelings of fear or worry. It involves distress but not delusions or hallucinations. Its symptoms are similar to stress but not a radical loss of touch with reality.
Unlike neurosis, psychosis is rather a severe mental disorder in which thoughts and emotions are so impaired that contact is lost with external reality. The symptoms of this mental illness are typically characterized by radical changes in personality, impaired functioning, and a distorted or nonexistent sense of objective reality. The person suffering from this disease may then encounter hallucinations or delusions.
Hope this helps! :-)