Myopathy in Pediatric Thyroid States: A Review of the Literature

Area of Science:

• Pediatric Endocrinology
• Neuromuscular Disorders

Background:

• Thyroid dysfunction, encompassing hypothyroidism and hyperthyroidism, can manifest with various clinical presentations.
• Myopathy, a disorder of muscle tissue, is a recognized but often overlooked complication of thyroid disease in pediatric populations.

Purpose of the Study:

• To review the clinical presentations, pathophysiology, diagnostic approaches, and treatment strategies for myopathy in children with thyroid disease.
• To emphasize the importance of considering myopathy in the differential diagnosis of pediatric neuromuscular weakness associated with thyroid dysfunction.

Main Methods:

• Comprehensive literature review of studies on pediatric myopathy and thyroid disease.
• Analysis of case reports and clinical series detailing muscle involvement in hypothyroid and hyperthyroid children.

Main Results:

• Myopathy presents diversely in children with thyroid disease, ranging from proximal muscle weakness to elevated muscle enzymes.
• Both hypothyroidism and hyperthyroidism are associated with distinct pathophysiological mechanisms leading to muscle impairment.
• Early recognition and management of thyroid-related myopathy are crucial for improving patient outcomes.

Conclusions:

• Myopathy should be a key consideration in the diagnostic workup of children presenting with unexplained muscular weakness or elevated muscle enzymes, particularly in the presence of thyroid disease.
• Integrated management addressing both the thyroid dysfunction and the myopathy is essential for effective treatment in pediatric patients.
• Further research is warranted to elucidate the specific molecular pathways involved in pediatric thyroid-associated myopathies.