Back to Underactive thyroid hypothyroidism. Many symptoms of an underactive thyroid hypothyroidism are the same as those of other conditions, so it can easily be confused for something else. Symptoms usually develop slowly and you may not realise you have a medical problem for several years. Elderly people with an underactive thyroid may develop memory problems and depression. Children may experience slower growth and development.
Hypothyroidism, or an underactive thyroid, is when the thyroid gland produces too few hormones. Low levels of thyroid hormones can cause a wide range of signs and symptoms from changes in mental functioning to digestive issues. The thyroid is a butterfly-shaped gland that sits in front of the neck. In the early stages, a person may not notice any symptoms. However, without treatment, hypothyroidism can lead to severe complications, such as infertility and heart disease. In this article, we describe 12 common signs and symptoms of hypothyroidism. We also discuss how common hypothyroidism is and when to see a doctor.