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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. Some forms of primary polydipsia are explicitly characterized as nonpsychogenic. ==Clinical presentation== Patients have been known to seek fluids from any source possible. In extreme episodes, the patient's kidneys will be unable to deal with the fluid overload, and weight gain will be noted. Primary polydipsia can be life-threatening as serum sodium is diluted to an extent that seizures and cardiac arrest can occur (hyponatremia). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「primary polydipsia」の詳細全文を読む スポンサード リンク
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