Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Infantile hypothyroidism
Medically reviewed by Min Clinic Staff | Updated: January 2026
Infantile hypothyroidism: Underactivity of the thyroid gland that starts after birth in infancy or early childhood, as manifested by delays in growth and development, and by myxedema (a dry, waxy type of swelling, often including swollen lips and nose). Treatment involves use of thyroid hormone medication. Also known as Brissaud infantilism and infantile myxedema.