[A practical algorithm for polydipsia in children]

Area of Science:

• Pediatric Endocrinology
• Nephrology
• Clinical Diagnostics

Background:

• Polydipsia in children lacks a standardized diagnostic approach, leading to diagnostic delays or unnecessary investigations.
• Accurate diagnosis is crucial for appropriate management and to avoid invasive procedures when not indicated.

Observation:

• Three pediatric cases of polydipsia were analyzed.
• Diagnoses included psychogenic polydipsia (two cases) and central diabetes insipidus (one case).

Findings:

• A proposed clinical diagnostic algorithm aids in differentiating the causes of polydipsia in children.
• The algorithm helps identify children requiring a water deprivation test versus those with unlikely somatic causes.

Implications:

• Implementing a systematic diagnostic work-up can streamline the diagnosis of pediatric polydipsia.
• This approach optimizes patient care by guiding appropriate investigations and specialist referral, particularly for the invasive water deprivation test.