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Congenital hypothyroidism

Last edited: 4/14/2026

Overview

Congenital hypothyroidism (CH) is a condition characterized by insufficient thyroid hormone production at birth, leading to potential severe neurodevelopmental morbidity if left untreated. Early diagnosis and treatment are crucial for optimal long-term outcomes 4.

Diagnosis

  • Newborn screening: Essential tool for early detection, typically measuring TSH levels 27.
  • Repeat screening: Necessary for high-risk infants due to limitations of initial screening 4.
  • Clinical evaluation: Important for infants with normal screening results but clinical suspicion 4.
  • Thyroid function tests: Confirm diagnosis with low T4 and elevated TSH levels 4.
  • Genetic testing: Considered for syndromic forms (e.g., IGSF1 deficiency, Simpson-Golabi-Behmel syndrome) 21122

    • Management

  • Levothyroxine (L-T4): First-line treatment; dose individualized based on age and weight 14.
  • Growth monitoring: Regular assessments to ensure proper growth and development 14.
  • Developmental follow-up: Close monitoring of cognitive and motor milestones 24.
  • Adjust dosing: Periodic TSH and T4 levels to adjust levothyroxine dose as needed 4.

    • Special Populations

  • Pediatrics: Early treatment critical to prevent neurodevelopmental deficits 1424.
  • Comorbidities: Consider interactions, e.g., neonatal abstinence syndrome masked by CH 20.
  • Syndromic forms: Tailored management considering associated genetic syndromes (e.g., IGSF1 deficiency, Simpson-Golabi-Behmel syndrome) 21122.

    • Key Recommendations

  • Universal newborn screening for CH is essential for early detection and intervention (Evidence: Strong 427).
  • Initiate levothyroxine therapy promptly after diagnosis to optimize growth and development (Evidence: Strong 14).
  • Regular follow-up with thyroid function tests and developmental assessments is crucial for monitoring treatment efficacy (Evidence: Moderate 424).
  • Consider genetic testing in cases with syndromic features to guide comprehensive management (Evidence: Moderate 21122).
  • Maintain vigilance for missed cases despite screening programs, necessitating clinical suspicion in symptomatic infants (Evidence: Moderate 28).

    • References

    1 Liang W, Tu L. Efficacy of levothyroxine on growth and development in children with congenital hypothyroidism: A meta-analysis. Medicine 2025. link 2 Nikolaou M, Vasilakis IA, Marinakis NM, Tilemis FN, Zellos A, Lykopoulou E et al.. Hepatomegaly and fatty liver disease secondary to central hypothyroidism in combination with macrosomia as initial presentation of IGSF1 deficiency syndrome. Hormones (Athens, Greece) 2023. link 3 Landau Prat D, Nguyen BJ, Strong A, Katowitz WR, Katowitz JA. "Blepharophimosis-plus" syndromes: Frequency of systemic genetic disorders that also include blepharophimosis. Clinical & experimental ophthalmology 2021. link 4 Wassner AJ. Congenital Hypothyroidism. Clinics in perinatology 2018. link 5 Léger J, Olivieri A, Donaldson M, Torresani T, Krude H, van Vliet G et al.. European Society for Paediatric Endocrinology consensus guidelines on screening, diagnosis, and management of congenital hypothyroidism. Hormone research in paediatrics 2014. link 6 Kumar S, Mahesh DM, Vignesh G, Sagili H, Dhanapathi H, Hamide A. Congenital hypothyroidism presenting as menorrhagia in adulthood. The Journal of the Association of Physicians of India 2013. link 7 Kleinlein B, Griese M, Liebisch G, Krude H, Lohse P, Aslanidis C et al.. Fatal neonatal respiratory failure in an infant with congenital hypothyroidism due to haploinsufficiency of the NKX2-1 gene: alteration of pulmonary surfactant homeostasis. Archives of disease in childhood. Fetal and neonatal edition 2011. link 8 Gu YH, Kato T, Harada S, Inomata H, Aoki K. Time trend and geographic distribution of treated patients with congenital hypothyroidism relative to the number of available endocrinologists in Japan. The Journal of pediatrics 2010. link 9 Griffith CB, Probert RC, Vance GH. Genital anomalies in three male siblings with Simpson-Golabi-Behmel syndrome. American journal of medical genetics. Part A 2009. link 10 Banghova K, Al Taji E, Cinek O, Novotna D, Pourova R, Zapletalova J et al.. Pendred syndrome among patients with congenital hypothyroidism detected by neonatal screening: identification of two novel PDS/SLC26A4 mutations. European journal of pediatrics 2008. link 11 Kurtoglu S, Akcakus M, Gunes T, Cetin N, Topaloglu N. Congenital hypothyroidism associated with Rubinstein-Taybi syndrome. Journal of pediatric endocrinology & metabolism : JPEM 2003. link 12 Mariani S, Iughetti L, Bertorelli R, Coviello D, Pellegrini M, Forabosco A et al.. Genotype/phenotype correlations of males affected by Simpson-Golabi-Behmel syndrome with GPC3 gene mutations: patient report and review of the literature. Journal of pediatric endocrinology & metabolism : JPEM 2003. link 13 Stoll C. Congenital blepharophimosis and ptosis in a mentally retarded girl: a new case of Ohdo syndrome?. Genetic counseling (Geneva, Switzerland) 1999. link 14 Dinulos MB, Pagon RA. Autosomal dominant inheritance of Barber-Say syndrome. American journal of medical genetics 1999. link1096-8628(19990903)86:1<54::aid-ajmg10>3.0.co;2-2) 15 Kurtoğlu S, Tutuş A, Aydin K, Genç E, Caksen H. Persistent neonatal hypoglycemia: an unusual finding of congenital hypothyroidism. Journal of pediatric endocrinology & metabolism : JPEM 1998. link 16 Worku B. Blepharophimosis syndrome (the syndrome of blepharophimosis, blepharoptosis and epicanthus inversus). Ethiopian medical journal 1998. link 17 Mhanni AA, Dawson AJ, Chudley AE. Vertical transmission of the Ohdo blepharophimosis syndrome. American journal of medical genetics 1998. link 18 Nakamura T, Noma S. A Japanese boy with Young-Simpson syndrome. Acta paediatrica Japonica : Overseas edition 1997. link 19 da Silva Lopes VL, Guion-Almeida ML. Ohdo syndrome: report on a Brazilian girl with additional findings. Clinical genetics 1997. link 20 Bahwere P, Haumont D, Delange F. Congenital hypothyroidism and neonatal withdrawal syndrome. European journal of pediatrics 1996. link 21 Yamashita H, Yasuhi I, Ishimaru T, Matsumoto T, Yamabe T. A case of nondiabetic macrosomia with Simpson-Golabi-Behmel syndrome: antenatal sonographic findings. Fetal diagnosis and therapy 1995. link 22 Terespolsky D, Farrell SA, Siegel-Bartelt J, Weksberg R. Infantile lethal variant of Simpson-Golabi-Behmel syndrome associated with hydrops fetalis. American journal of medical genetics 1995. link 23 Maat-Kievit JA, Milla PJ, Collins JE, Baraitser M, Winter RM. A case with blepharophimosis resembling Ohdo syndrome. Clinical dysmorphology 1994. link 24 Gottschalk B, Richman RA, Lewandowski L. Subtle speech and motor deficits of children with congenital hypothyroid treated early. Developmental medicine and child neurology 1994. link 25 Martínez Santana S, Pérez Alvarez F, Frías JL, Martínez-Frías ML. Hypertrichosis, atrophic skin, ectropion, and macrostomia (Barber-Say syndrome): report of a new case. American journal of medical genetics 1993. link 26 Chen E, Johnson JP, Cox VA, Golabi M. Simpson-Golabi-Behmel syndrome: congenital diaphragmatic hernia and radiologic findings in two patients and follow-up of a previously reported case. American journal of medical genetics 1993. link 27 Gruters A. Congenital hypothyroidism. Pediatric annals 1992. link 28 Grant GA, Carson DJ, Reid MM, Hutchinson JM. Congenital hypothyroidism missed on screening. Archives of disease in childhood 1986. link 29 Kohno H, Watanabe N, Ootsuka M, Kajiwara M, Gohya N. Pituitary cretinism in two sisters. Archives of disease in childhood 1980. link 30 Campbell WA, Price WH. Congenital hypothyroidism in Klinefelter's syndrome. Journal of medical genetics 1979. link

    Original source

    1. [1]
      Efficacy of levothyroxine on growth and development in children with congenital hypothyroidism: A meta-analysis. — Liang W, Tu L Medicine (2025)
    2. [2]
      Hepatomegaly and fatty liver disease secondary to central hypothyroidism in combination with macrosomia as initial presentation of IGSF1 deficiency syndrome. — Nikolaou M, Vasilakis IA, Marinakis NM, Tilemis FN, Zellos A, Lykopoulou E et al. Hormones (Athens, Greece) (2023)
    3. [3]
      "Blepharophimosis-plus" syndromes: Frequency of systemic genetic disorders that also include blepharophimosis. — Landau Prat D, Nguyen BJ, Strong A, Katowitz WR, Katowitz JA Clinical & experimental ophthalmology (2021)
    4. [4]
      Congenital Hypothyroidism. — Wassner AJ Clinics in perinatology (2018)
    5. [5]
      European Society for Paediatric Endocrinology consensus guidelines on screening, diagnosis, and management of congenital hypothyroidism. — Léger J, Olivieri A, Donaldson M, Torresani T, Krude H, van Vliet G et al. Hormone research in paediatrics (2014)
    6. [6]
      Congenital hypothyroidism presenting as menorrhagia in adulthood. — Kumar S, Mahesh DM, Vignesh G, Sagili H, Dhanapathi H, Hamide A The Journal of the Association of Physicians of India (2013)
    7. [7]
      Fatal neonatal respiratory failure in an infant with congenital hypothyroidism due to haploinsufficiency of the NKX2-1 gene: alteration of pulmonary surfactant homeostasis. — Kleinlein B, Griese M, Liebisch G, Krude H, Lohse P, Aslanidis C et al. Archives of disease in childhood. Fetal and neonatal edition (2011)
    8. [8]
      Time trend and geographic distribution of treated patients with congenital hypothyroidism relative to the number of available endocrinologists in Japan. — Gu YH, Kato T, Harada S, Inomata H, Aoki K The Journal of pediatrics (2010)
    9. [9]
      Genital anomalies in three male siblings with Simpson-Golabi-Behmel syndrome. — Griffith CB, Probert RC, Vance GH American journal of medical genetics. Part A (2009)
    10. [10]
      Pendred syndrome among patients with congenital hypothyroidism detected by neonatal screening: identification of two novel PDS/SLC26A4 mutations. — Banghova K, Al Taji E, Cinek O, Novotna D, Pourova R, Zapletalova J et al. European journal of pediatrics (2008)
    11. [11]
      Congenital hypothyroidism associated with Rubinstein-Taybi syndrome. — Kurtoglu S, Akcakus M, Gunes T, Cetin N, Topaloglu N Journal of pediatric endocrinology & metabolism : JPEM (2003)
    12. [12]
      Genotype/phenotype correlations of males affected by Simpson-Golabi-Behmel syndrome with GPC3 gene mutations: patient report and review of the literature. — Mariani S, Iughetti L, Bertorelli R, Coviello D, Pellegrini M, Forabosco A et al. Journal of pediatric endocrinology & metabolism : JPEM (2003)
    13. [13]
      Congenital blepharophimosis and ptosis in a mentally retarded girl: a new case of Ohdo syndrome? — Stoll C Genetic counseling (Geneva, Switzerland) (1999)
    14. [14]
      Autosomal dominant inheritance of Barber-Say syndrome. — Dinulos MB, Pagon RA American journal of medical genetics (1999)
    15. [15]
      Persistent neonatal hypoglycemia: an unusual finding of congenital hypothyroidism. — Kurtoğlu S, Tutuş A, Aydin K, Genç E, Caksen H Journal of pediatric endocrinology & metabolism : JPEM (1998)
    16. [16]
      Blepharophimosis syndrome (the syndrome of blepharophimosis, blepharoptosis and epicanthus inversus). — Worku B Ethiopian medical journal (1998)
    17. [17]
      Vertical transmission of the Ohdo blepharophimosis syndrome. — Mhanni AA, Dawson AJ, Chudley AE American journal of medical genetics (1998)
    18. [18]
      A Japanese boy with Young-Simpson syndrome. — Nakamura T, Noma S Acta paediatrica Japonica : Overseas edition (1997)
    19. [19]
      Ohdo syndrome: report on a Brazilian girl with additional findings. — da Silva Lopes VL, Guion-Almeida ML Clinical genetics (1997)
    20. [20]
      Congenital hypothyroidism and neonatal withdrawal syndrome. — Bahwere P, Haumont D, Delange F European journal of pediatrics (1996)
    21. [21]
      A case of nondiabetic macrosomia with Simpson-Golabi-Behmel syndrome: antenatal sonographic findings. — Yamashita H, Yasuhi I, Ishimaru T, Matsumoto T, Yamabe T Fetal diagnosis and therapy (1995)
    22. [22]
      Infantile lethal variant of Simpson-Golabi-Behmel syndrome associated with hydrops fetalis. — Terespolsky D, Farrell SA, Siegel-Bartelt J, Weksberg R American journal of medical genetics (1995)
    23. [23]
      A case with blepharophimosis resembling Ohdo syndrome. — Maat-Kievit JA, Milla PJ, Collins JE, Baraitser M, Winter RM Clinical dysmorphology (1994)
    24. [24]
      Subtle speech and motor deficits of children with congenital hypothyroid treated early. — Gottschalk B, Richman RA, Lewandowski L Developmental medicine and child neurology (1994)
    25. [25]
      Hypertrichosis, atrophic skin, ectropion, and macrostomia (Barber-Say syndrome): report of a new case. — Martínez Santana S, Pérez Alvarez F, Frías JL, Martínez-Frías ML American journal of medical genetics (1993)
    26. [26]
      Simpson-Golabi-Behmel syndrome: congenital diaphragmatic hernia and radiologic findings in two patients and follow-up of a previously reported case. — Chen E, Johnson JP, Cox VA, Golabi M American journal of medical genetics (1993)
    27. [27]
      Congenital hypothyroidism. — Gruters A Pediatric annals (1992)
    28. [28]
      Congenital hypothyroidism missed on screening. — Grant GA, Carson DJ, Reid MM, Hutchinson JM Archives of disease in childhood (1986)
    29. [29]
      Pituitary cretinism in two sisters. — Kohno H, Watanabe N, Ootsuka M, Kajiwara M, Gohya N Archives of disease in childhood (1980)
    30. [30]
      Congenital hypothyroidism in Klinefelter's syndrome. — Campbell WA, Price WH Journal of medical genetics (1979)
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