Neurosis is classified as an anxiety disorder. It represents a serious problem from the point of view of doctors. It not only affects women, but is increasingly being diagnosed in men. Neurosis is most often diagnosed in people between the ages of 25 and 45. The diagnosis of this illness requires careful observation of the patient, not only in terms of his or her psyche, but special attention is also paid to the patient's behaviour. What do we know about neurosis? What behaviours can indicate neurosis?