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[Psychogenic polydipsia in a child]

J Grunberg, G Gazzara, P López

    Boletin Medico Del Hospital Infantil De Mexico
    |September 1, 1981
    PubMed
    Summary

    This case study details a rare instance of psychogenic polydipsia in a toddler, characterized by excessive water drinking. The condition was confirmed through specific tests, and resolved with water deprivation.

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    Area of Science:

    • Pediatrics
    • Endocrinology
    • Nephrology

    Background:

    • Psychogenic polydipsia is a rare condition in infants and children, often leading to diagnostic delays.
    • Excessive water intake can disrupt family life and mimic other medical conditions.

    Observation:

    • A 20-month-old girl presented with compulsive water drinking, reaching 4,000 ml daily.
    • The child exhibited the ability to concentrate urine, as confirmed by 1-deamino-BD arginine vasopressin (DDAVP) and water deprivation tests.
    • A unilateral complete duplication of the collecting system was identified via intravenous pyelogram, but was not causally linked to the polyuria.

    Findings:

    • Psychogenic polydipsia was confirmed in a 2-year-and-9-month-old girl.
    • The patient's excessive thirst (polydipsia) resolved within two months of progressive water deprivation.
    • No evidence of urinary tract infection was found.

    Implications:

    • This case highlights the diagnostic challenges in differentiating psychogenic polydipsia from cranial diabetes insipidus and urological disorders in young children.
    • Early recognition and appropriate management, such as controlled water intake, are crucial for resolving psychogenic polydipsia.
    • Further research into the prevalence and specific diagnostic markers for psychogenic polydipsia in pediatric populations is warranted.

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