Functional neurological disorders (FND) are common conditions that fall between neurology and psychiatry. Having been neglected for many years, knowledge and expertise in such disorders within the health professions has been lacking, but the situation is improving. FNDs are neurological disorders, characterized by almost any type of neurological symptom, caused by a brain network dysfunction that does not exclude the possibility of normal function, is sometimes due in part to a psychological cause, and cannot be explained by other neurological pathology that may or may not be present. The pathophysiology often seems related to hyperactivity of the limbic system of the brain, and is maintained by abnormal illness beliefs. Symptoms may be inconsistent or incompatible/incongruent with other known neurological disorders or with human anatomy and physiology. The diagnosis should be based on positive features, with the characteristics of inconsistency and incompatibility as noted in the definition. Psychological factors are often important in etiology, and the cause of FNDs is best understood within a biopsychosocial model. Rehabilitation of FND is multidisciplinary and typically involves neuropsychology. Psychotherapy of various types can be useful but the best validated is cognitive behavioral therapy (CBT). For functional movement disorders, psychologically-supported physical and occupational therapy has proven to be successful.