Primary polydipsia

Primary polydipsia and psychogenic polydipsia are forms of polydipsia characterised by excessive fluid intake in the absence of physiological stimuli to drink. Psychogenic polydipsia which is caused by psychiatric disorders, often schizophrenia, is often accompanied by the sensation of dry mouth. Some forms of polydipsia are explicitly non-psychogenic. Primary polydipsia is a diagnosis of exclusion.

For the term formerly used in reference to compulsive drinking of alcohol, see Dipsomania.
Primary polydipsia
Other namesPsychogenic polydipsia, compulsive drinking, psychosis-intermittent hyponatremia-polydipsia (PIP) syndrome
Patients with PPD often prefer ice cold water
SpecialtyPsychiatry
SymptomsXerostomia, polydipsia, fluid-seeking behavior
ComplicationsWater intoxication
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