Disease or Syndrome
primary hypothyroidism
pri·ma·ry hy·po·thy·roid·ism [ prahy-mer-ee, -muh-ree hahy-puh-thahy-roi-diz-uhm ]
Definitions related to primary hypothyroidism:
  • A type of hypothyroidism that results from a defect in the thyroid gland.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Abnormally low levels of thyroid hormones due to a disorder originating within the thyroid gland.
    NCI
    U.S. National Cancer Institute, 2021
  • Hypothyroidism due to dysfunction of the thyroid gland.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
  • Hypothyroidism is a clinical state resulting from underproduction of the thyroid hormones T4 and T3. Most cases (95%) are due to primary hypothyroidism, a failure of the thyroid gland to produce thyroid hormones. The remaining 5% of cases are due to secondary hypothyroidism, underproduction of TSH by the pituitary gland. Subclinical...
    Epocrates
    Athenahealth, Inc., 2019
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.