The thyroid gland below the voice box produces hormones called thyroxine (T4) and triiodothyronine (T3), which help to control cells that use energy in the body, according to Medline Plus. When the body overproduces these hormones it can lead to a condition called hyperthyroidism and other conditions like thyroiditis, Graves' disease, or growths in the thyroid or pitutary gland. Since these hormones help to regulate metabolism, having an overproduction of the thyroid hormones can result in an array of symptoms.
Fatigue
People that are experiencing hyperthyroidism may experience weakness and fatigue. They might report to their doctor that they are feeling generally tired and not have the amount of energy that they would expect to have. This can be disruptive to every day functioning. Some people do not feel these symptoms, while the symptoms can also easily be missed in the elderly.
Gastrointestinal Effects
It is not uncommon for people with hyperthyroidism to experience gastrointestinal effects. They might include nausea, diarrhea and vomiting. Some people may develop frequent bowel movements. They also may have a change in their appetite. When someone has these symptoms, it is possible that he attributes it to another cause. If you are experiencing gastrointestinal symptoms that do not go away, it is important to be evaluated by your doctor.
High Blood Pressure and Irregular Pulse
Some people with high thyroid hormone levels develop high blood pressure. Feeling that the heart is pounding or the heartbeat is rapid, also known as tachycardia, is another common symptom. On exam, a doctor may notice an irregular pulse.
Other Symptoms
Protruding eyes, sleeping difficulty, flushing, increased sweating, tremors, irregular or lack of menses in women, breast development in men, weight loss and itching are other symptoms that people with hyperthyroidism may develop. Some sufferers develop a goiter, or swelling at the base of the neck. Hyperthyroidism is progressive, therefore symptoms at first may be mild. As time goes on, the symptoms worsen. When one experiences these symptoms, she should be evaluated by her doctor to identify the problem. Hyperthyroidism can be treated with medications, radioactive iodine or surgery. Some people with a rapid heart rate are put on beta blockers, which reduce the rate and prevent palpitations. Once treatment is started, symptoms subside.
