A hyperthyroid symptoms checklist includes anxiety, insomnia, decreased concentration, restlessness and bulging eyes. Other symptoms include irritability, hair loss, excessive sweating, an aversion to heat and increased blood pressure as well as unexpected weight loss, rapid heart rate and heart palpitations, according to WebMD.
Hyperthyroidism occurs when there is an excessive amount of thyroid hormones, according to MedicineNet. The most common cause of hyperthyroidism is an autoimmune disorder known as Graves' disease, according to WebMD. One common symptom of Graves' disease is a visible swelling behind the eyes.
Hyperthyroidism can also be caused by thyroid nodules, according to WebMD. Larger nodules may create a visible goiter, while smaller nodules can be detected through ultrasound. Another cause of hyperthyroidism is inflammation of the thyroid, also known as thyroiditis. Symptoms accompanying thyroiditis-induced hyperthyroidism include fever, neck aches and pains, and a sore throat that is painful on swallowing.
Less common symptoms of hyperthyroidism include an enlargement in the neck known as a goiter, muscle weakness or trembling hands, vision problems, diarrhea or frequent bowel movements, and irregular menstrual periods for women, according to Mayo Clinic. Hyperthyroidism is more common in women, and a family history of thyroid disorders increases the risk of hyperthyroidism.
A self-check for an enlarged thyroid can be performed in front of a mirror, according to WebMD. This is done by tilting back the head, taking a drink of water, and observing the part of the neck below the Adam's apple and above the collarbone during the process of swallowing. A doctor should be consulted if any bulges or protrusions are observed.