Schizophrenia and Other Psychosis
A man feels that his nose is too long; friends feel otherwise. He has consulted 3 plastic surgeons but all have refused to treat him. He suffers from what condition? AIPG 2010)
53. Ans. D. Psychogenic polydipsia
a. Self-induced water intoxication should always be considered in the differential diagnosis of confusional states and seizures in schizophrenic patients.
b. As many as 20% of patients with a diagnosis of schizophrenia drink excessive amounts of water. At least 4% of these patients suffer from chronic hyponatremia and recurrent acute water intoxication.
c. Medications that cause excessive water retention, such as lithium and carbamazepine, can aggravate the symptomatology.