Functional disorders are a group of recognisable medical conditions which are due to changes to the functioning of the systems of the body rather than...

Functional neurologic disorder or functional neurological disorder (FND) is a condition in which patients experience neurological symptoms such as weakness...

Functional gastrointestinal disorders (FGID), also known as disorders of gut–brain interaction, include a number of separate idiopathic disorders which...

Conversion disorder (CD), or functional neurologic symptom disorder, is a diagnostic category used in some psychiatric classification systems. It is sometimes...

Histrionic personality disorder (HPD) is defined by the American Psychiatric Association as a personality disorder characterized by a pattern of excessive...

Dissociative identity disorder (DID), previously known as multiple personality disorder, is one of multiple dissociative disorders in the DSM-5, DSM-5-TR...

Functional symptom Functional disorder Functional classification for roads Functional organization Functional training Functional (mathematics), a term applied...

major depressive disorder, generalized anxiety disorder, and phobias. Somatic symptom disorder is frequently associated with functional pain syndromes like...

of functional disorders leading to abdominal pain due to dysfunction of the Sphincter of Oddi: functional biliary sphincter of Oddi and functional pancreatic...

(PNES), also referred to as pseudoseizures, non-epileptic attack disorder (NEAD), functional seizures, or dissociative seizures, are episodes resembling an...