Primary polydipsia
(重定向自Psychogenic polydipsia)
Primary polydipsia or psychogenic polydipsia is a special form of polydipsia. It is usually associated with a patient's increasing fluid intake due to the sensation of having a dry mouth.
When the term "psychogenic polydipsia" is used, it implies that the condition is caused by mental disorders. However, the dry mouth is often due to phenothiazine medications used in some mental disorders, rather than the underlying condition.