ABSTRACT
Psychiatric problems can be subdivided into those which are organic and those which are functional. The functional disorders are commonly referred to as psychological, neuroses or 'nervous illnesses', and are characterized by disturbances of feelings, attitudes and habits severe enough to impair the diver's life or to reduce efficiency. They are 'personalized' reactions to stress. The symptoms are usually those of anxiety and/or depression, but occasionally with hysterical or obsessional features.
