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Congenital Hypothyroidism: Screening and Management.

Susan R Rose1, Ari J Wassner2, Kupper A Wintergerst3

  • 1Divisions of Endocrinology.

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Prompt diagnosis and treatment of congenital hypothyroidism (CH) via newborn screening (NBS) are crucial for preventing intellectual disabilities. However, global NBS coverage is incomplete, necessitating clinical vigilance for CH diagnosis and management.

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Area of Science:

  • Pediatrics
  • Endocrinology
  • Genetics

Background:

  • Untreated congenital hypothyroidism (CH) can cause irreversible intellectual disabilities.
  • Newborn screening (NBS) for CH enables early diagnosis and treatment, leading to normal neurocognitive outcomes.
  • Global NBS coverage is limited, leaving many neonates vulnerable.

Purpose of the Study:

  • To highlight the importance of timely diagnosis and management of CH.
  • To address challenges in CH screening and treatment.
  • To emphasize the need for clinical suspicion of CH even with normal NBS results.

Main Methods:

  • Review of current literature on CH diagnosis and management.
  • Discussion of treatment protocols and goals for CH.
  • Analysis of special populations requiring tailored CH management.

Main Results:

  • Early and adequate levothyroxine treatment normalizes neurodevelopment in CH patients.
  • NBS is not universally available, with 70% of neonates lacking screening.
  • Clinical symptoms of CH warrant thyroid function testing irrespective of NBS results.

Conclusions:

  • NBS alone is insufficient; comprehensive CH management includes diagnosis confirmation, accurate testing, effective treatment, and follow-up.
  • Physicians must consider CH in symptomatic infants, even if NBS results are normal.
  • Prompt identification and management are key to preventing adverse outcomes in CH.