Thyroid Disorders in Kids

This episode of Charting Pediatrics explores the often-overlooked but critical role of thyroid disorders in children and adolescents, emphasizing how these conditions can masquerade as more common issues like ADHD, anxiety, depression, or growth failure. Dr. Maggie Chan, a pediatric endocrinologist at Children's Hospital Colorado, explains that primary acquired hypothyroidism—most commonly autoimmune in nature—is the most frequent thyroid disorder seen in pediatric patients, while Graves’ disease (autoimmune hyperthyroidism) requires urgent evaluation due to risks like thyroid storm. The discussion highlights the importance of interpreting thyroid function tests in context, noting that mild TSH elevations (5–10) often resolve on repeat testing and may not indicate clinical disease, especially in overweight children. Key red flags include linear growth failure without corresponding weight gain, which should prompt screening with both TSH and free T4, particularly to rule out central hypothyroidism. The episode also warns about common lab pitfalls, such as interference from biotin supplements, estrogen use, illness, and timing of blood draws. Practical takeaways include the need for vigilance in growth monitoring, cautious interpretation of borderline labs, and timely referral for true hyperthyroidism or persistent abnormalities.