Download Symptoms Of Underactive Thyroid In Females Nhs Images. Symptoms of an underactive thyroid are often confused for something else, by patients and doctors. One of the main symptoms of an underactive thyroid is that you put on weight, even though you may feel less like eating.

Symptoms also usually begin slowly and you may not notice them for several years.

One of the main symptoms of an underactive thyroid is that you put on weight, even though you may feel less like eating. Because hypothyroidism develops slowly, many people don't notice symptoms of the disease for months or even years. If your test results show raised tsh but normal t4, you may be at risk of developing an underactive thyroid in the future. An underactive thyroid can often be successfully treated by taking daily hormone tablets to replace the hormones your thyroid is not making.