Hyperthyroidism in childhood: peculiarities of the different clinical pictures

Area of Science:

• Pediatric Endocrinology
• Thyroid Disorders
• Internal Medicine

Background:

• The clinical and biochemical presentation of hyperthyroidism in children varies significantly with its underlying cause.
• Understanding these differences is crucial for accurate diagnosis and effective management.

Purpose of the Study:

• To provide an updated overview of the epidemiology, pathophysiology, clinical and biochemical features, diagnostic approaches, and management of hyperthyroid syndromes in childhood.
• To highlight the distinctions based on various etiologies.

Main Methods:

• Review of current literature on pediatric hyperthyroidism etiologies.
• Summarization of hormonal, immunological, anamnestic, and clinical features.
• Identification of diagnostic procedures for differential diagnosis.

Main Results:

• Graves' disease (84%) and Hashimoto's thyroiditis (12%) are the most common causes of childhood hyperthyroidism.
• Less frequent causes include hyperfunctioning thyroid nodules (<3%), TSH-secreting adenomas (~1%), and McCune-Albright syndrome (~1%).
• Distinct hormonal, immunological, and clinical profiles characterize each etiology.

Conclusions:

• Hyperthyroid syndrome in children exhibits diverse clinical manifestations directly related to specific etiologies.
• Diagnostic procedures and therapeutic management strategies must be tailored to the individual cause of hyperthyroidism.