Thyroid function disorders are the most common pathology of endocrine glands, which has a significant impact on the physical and mental development of children. Diagnosis of thyroid pathology in newborns and infants is very difficult. They are caused by peculiarities of functional activity of the thyroid gland in newborns and infants, postnatal modifications of pituitary-thyroid system, as well as numerous "masks" of other pathological processes, under which thyroid pathology can hide. In addition, the formation and functional activity of the child's thyroid gland is closely related to the health of the mother and the course of pregnancy. Transient neonatal hypothyroidism (TNH) is reversible, and thyroid function subsequently recovers, but intellectual development disorders remain lifelong. Unfortunately, data on the consequences of neonatal transient hypothyroidism are rather fragmentary and contradictory. Aim. The aim of the present study was to investigate the features of mental development in children with congenital transient hypothyroidism during the neonatal period. Material and Methods: clinical-psychopathological, clinical-catamnestic, experimental-psychological and statistical research methods. Results. Based on learning and applying research methods, were first studied long-term results of neonatal transient form of hypothyroidism to 11 years. The validity of the timely use of thyroid drugs in combination with neuroprotective showed efficiency. Conclusion. Given the paramount role of thyroid hormones in the formation and maturation of the nervous system in children, the special significance of transient hypothyroidism among other endocrinopathies of newborns and children becomes obvious, which necessitates its further study.

Behavior, Prediction, Analyzing.