Congenital Hypothyroidism
(CH)
An Endocrine Disorder
What is it?
Congenital Hypothyroidism (CH) is a disease that is caused by the under activity of the thyroid gland. This under activity results in underproduction of thyroid hormones. These hormones play an important role in proper body metabolism. In growing children these hormones are essential for normal physical growth and mental development.
Inheritance and Frequency
Although this disorder is detectable at birth, it is not an inherited disorder. Hypothyroidism does not follow any type of pattern as to whom it will affect and randomly affects infants from almost every origin.
It is estimated that hypothyroidism will occur in 1 of every 4,500 births, making it one of the most common metabolic disorders.
Signs & Symptoms
Clinical signs of hypothyroidism often do not appear until the infants is 3-4 months of age, thus it is most likely that affected infants will have already suffered irreversible brain damage before signs of the disease begin to appear. Many times the early diagnosis relies almost solely on the results of the newborn screening. An affected infant may have prolonged neonatal jaundice, growth failure, lethargy, poor appetite and constipation.
Long Term Effects
Affected infants who are treated within the first few weeks of life will have normal or near-normal intelligence. Delayed treatment can cause mental retardation, growth failure, deafness, and neurological problems.
Treatment
Treatment for hypothyroidism is by drug therapy. An infant born with this condition will have to take the drug thyroxine throughout his/her lifetime. Thyroxine is usually taken orally.
History
Screening For
Visit the "What Does Your State Screen For Page" to find out what your state screens for in its newborn screening test.
Supplemental Screening
If you live in a state that does not perform screening on its newborns for all detectable disorders, there are laboratories that will provide the screening for this to you no matter what state you live in. For more information about supplemental screening, visit our supplemental screening page. Also visit our frequently asked questions page for more information on newborn screening.
Other Sites of Reference
- The MAGIC Foundation
- National Organization For Rare Disorders - Hypothyroidism
- American Academy of Pediatrics' Policy Statement - Newborn Screening for Congenital Hypothyroidism: Recommended Guidelines (RE9316)
- The Thyroid Society
- Thyroid Foundation of Canada
- What should I know about Congenital Hypothyroidism?
- MUMS - National Parent-to-Parent Network
Support Groups
The MAGIC Foundation for Children's
Growth (MAGIC)
1327 North Harlem Avenue
Oak Park, IL 60302
(708) 383-0808 or 1-800-362-4423
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