An increase in free thyroid hormone, combined with a thyrotropin value, can determine hyperthyroidism. Hyperthyroidism, may be due to hyperthyroidism of thyroid origin, or pituitary hyperthyroidism. Symptoms of hyperthyroidism: The patient may experience, fatigue, weakness, fear of heat, and excessive sweating. Eating a lot, but being hungry easily and losing weight. Some people, may feel nervous, anxious, irritable, insomnia, and memory loss. Some people will experience symptoms such as hand tremors, eye tremors, and even cardiovascular symptoms such as panic and shortness of breath. In terms of digestive system, hyperthyroidism also has some symptoms. For example, the number of bowel movements is more frequent than before, which may have been only 1-2 bowel movements a day, but now it is significantly more. If you combine the symptoms with the increase in free thyroxine, you need to consult your doctor at the hospital. Depending on the results, the doctor will refine the thyroid function further. A screening test for thyroid-related antibodies and a thyroid ultrasound will be performed to determine, based on a combination of these results, exactly what is causing the hyperthyroidism. With hyperthyroidism, it may be due to Graves’ disease or thyroiditis, or it may even be due to the pituitary gland. Once the cause is clarified, further treatment options will be derived.