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Primary polydipsia: Update.

Leeda Ahmadi1, Morris B Goldman1

  • 1Department of Psychiatry, Northwestern University Feinberg School of Medicine, Chicago, IL, 60611, USA.

Best Practice & Research. Clinical Endocrinology & Metabolism
|November 23, 2020
PubMed
Summary
This summary is machine-generated.

Primary polydipsia involves excessive water intake, distinct from diabetes insipidus. Research highlights hypothalamic circuits and non-homeostatic influences contributing to this condition, with potential links to psychotic disorders.

Keywords:
arginine vasopressincompulsive water drinkinghyponatremiapsychogenic polydipsiapsychosis-intermittent hyponatremia-polydipsia syndromeschizophrenia

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Area of Science:

  • Neuroscience
  • Endocrinology
  • Nephrology

Background:

  • Primary polydipsia is characterized by pathologically high water intake, which suppresses arginine vasopressin (AVP) secretion.
  • This condition mirrors diabetes insipidus, where low AVP levels increase water intake.
  • Primary polydipsia encompasses various disorders with distinct pathophysiological mechanisms and clinical significance.

Purpose of the Study:

  • To review the clinical features, significance, risk factors, pathophysiology, and treatment of primary polydipsia.
  • To explore the role of hypothalamic circuitry in primary polydipsia using recent technological advances.
  • To examine the connection between primary polydipsia, water imbalance, and psychotic disorders.

Main Methods:

  • Literature review of primary polydipsia disorders.
  • Summary of recent technological advances in neurocircuitry research.
  • Analysis of translational neuroscience studies in animal models.

Main Results:

  • Primary polydipsia is often driven by non-homeostatic influences rather than water balance regulation.
  • Hypothalamic circuitry is identified as a key area involved in primary polydipsia.
  • A stress-diathesis model involving the anterior hippocampus is linked to water imbalance in psychotic disorders.

Conclusions:

  • Understanding the neurocircuitry of water intake offers new insights into primary polydipsia.
  • Hypothalamic pathways are crucial for regulating water intake and may be implicated in primary polydipsia.
  • Animal models may help identify reversible pathological changes contributing to water imbalance and psychosis.