Peripheral resistance to thyroid hormones may be a cause of permanent congenital hypothyroidism (see this term), a permanent thyroid hormone deficiency that is present from birth.
Prevalence is estimated to be 1/40,000.
The majority of cases are asymptomatic but some may have features of hypothyroidism including decreased activity and increased sleep, feeding difficulty and constipation, prolonged jaundice, myxedematous facies, large fontanels (especially posterior), macroglossia, a distended abdomen with umbilical hernia, and hypotonia.
In 90% of cases the peripheral resistance to thyroid hormones is caused by dominantly inherited mutations in genes encoding for thyroid hormone receptor beta.
Last update: August 2010
- Dr Stephen LAFRANCHI
- Dr Maynika RASTOGI