Wednesday, May 2, 2012

Psychogenic polydypsia

Patient with polydypsia, polyuria and symptoms of hyponatremia- lethargy, confusion, seizures, psychosis, death

Water deprivation test shows an almost normal response. There's a little deviation from normal bcos kidney's concentrating ability is slightly impaired by hyperdilution of the renal medulla.

May be seen in Schizophrenics, children,

positive family history

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