Functional movement disorders (FMD), previously referred to as “psychogenic” movement disorders, are characterized by abnormal movements, postures or spasms, such as shaking (irregular tremor) or ...

Functional gastrointestinal disorders are a range of disorders of the gastrointestinal tract for which there are no structural or biochemical abnormalities that can be found to explain the symptoms.

Epilepsy is one such example. While the seizure disorder was once considered functional, it is now regarded as an organic neurological condition. Determining whether the cause is organic or ...

The term encompasses acute, chronic, recurrent or functional disorders and covers a wide range of diseases, including inflammatory bowel disease and functional dyspepsia. A phase 2 trial of ...