Pediatric hypothyroidism – clinical manifestations, long-term sequelae, and evidence-based management approaches in childhood
David Janitzek
2026-03-25
5 min. read
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The thyroid gland, positioned in the anterolateral region of the neck, serves as a pivotal component of the endocrine system, synthesizing two critical hormones—thyroxine (T4) and triiodothyronine (T3)—which govern cellular metabolic processes and thereby influence physical growth, cognitive development, and overall energy homeostasis within the organism. Its functional regulation is tightly controlled by the hypothalamic-pituitary axis, wherein thyrotropin-releasing hormone (TRH) stimulates the secretion of thyroid-stimulating hormone (TSH) from the pituitary gland, subsequently triggering thyroid hormone production. Any disruption within this intricate feedback mechanism—whether primary damage to thyroid parenchyma or secondary dysfunction at the central level—may result in either a hormonal deficiency state, termed hypothyroidism, or conversely, an excessive activation known as hyperthyroidism.
Discretion of the thyroid in children
Thyroid insufficiency is a set of medical symptoms resulting from an absolute or relative deficiency of thyroid hormones in the body or from a defect in their receptor that enables the hormone to act in the tissues.Thyroid inadequacy may result from damage to the thyroid gland itself, whereas primary impairment is referred to, or impairments in the functioning of the pancreas and/or subcutaneous tissue that control the release of hormones by the blood vessel, in which case Thyroid dysfunction occurs.
Symptoms and effects of hypothyroidism
Symptoms of the disease vary according to the age of the child. In newborns in the first month after birth, there is a weak appetite, leprosy, decreased body temperature, large blackness, broad cranial sutures and prolonged physiological jaundice. After the first months of life there are additional symptoms in the form of low sweating and constipation, and consequently low body weight gain. In infants who are constantly sleepy, have dry skin and fluid.
Treatment of thyroid insufficiency
Therefore, the basis for the treatment of thyroid insufficiency is pharmacotherapy, but the nutritional status of the patient should not be forgotten. In the case of thyrococcal insufficient disease, a balanced diet should also be observed in patients. The diet should be introduced only after stabilizing the levels of hormones in the blood to the desired levels by medicinal products. When setting an appropriate diet, coexisting diseases (in children most commonly type II diabetes) and the patient's dietary status should be taken into consideration. In case of a thyroid deficiency, the patients should also observe an average of less than 30% of the metabolic rate of seafood in relation to healthy children, which results in the consumption of even the highest levels of saturated fat produced by the eggs, which contributes to the accumulation of fat in the tissues of the ovaries and ovaries.
