The thyroid gland is a key organ in the body. During pregnancy it can change, sometimes in a normal way, and other times pathological. Today we are going to tell you about hyperthyroidism in pregnancy and everything you need to know about this condition.
Hyperthyroidism in pregnancy is one of the forms of thyroid pathology that occurs the least during pregnancy. It is estimated that it is present between 0.05 to 0.2% of women in this state.
It is not easy to diagnose hyperthyroidism in pregnancy, as physiological changes in the mother’s body may mask some symptoms. If the diagnosis is confirmed, it will have a very different treatment to that carried out in non-pregnant women. We will tell you.
Forms of hyperthyroidism during pregnancy
Thyroid function shows great changes in women during pregnancy. This is necessary for normal growth and development of the fetus to occur. Among the main transformations are the following:
- Sudden increase in the production of thyroxine: it occurs during the first trimester of pregnancy and can lead to transient hyperthyroidism.
- Elevation of thyroxine-binding globulin (TBG): TBG is a protein that transports related substances to the thyroid gland. Its concentration increases due to the increased production of estrogens during pregnancy.
- Changes in iodine reserves: there is a decrease in iodine before the 20th week of gestation, which is to be expected. This mineral is basic for the production of levothyroxine.
Hyperthyroidism in pregnancy is often transitory, when it is due to physiological changes or hyperemesis gravidarum, that is, morning vomiting. However, in most cases, the main cause is Graves’ disease.
This occurs in one in every 500 pregnant women and consists of an immune-based pathology that accelerates the functioning of the thyroid gland, overstimulating it. If it is not treated in time and properly, it can lead to serious complications for the mother and baby.