GENERAL HISTOLOGY

Detailed explanation-1: -Hyperthyroidism is a pathological disorder in which excess thyroid hormone is synthesised and secreted by the thyroid gland. It is characterised by normal or high thyroid radioactive iodine uptake (thyrotoxicosis with hyperthyroidism or true hyperthyroidism).

Detailed explanation-2: -Hyperthyroidism happens when the thyroid gland makes too much thyroid hormone. This condition also is called overactive thyroid. Hyperthyroidism speeds up the body’s metabolism. That can cause many symptoms, such as weight loss, hand tremors, and rapid or irregular heartbeat.

Detailed explanation-3: -A TSH level lower than normal indicates there is usually more than enough thyroid hormone in the body and may indicate hyperthyroidism. When hyperthyroidism develops, free thyroxine (T4) and free triiodothyronine (T3) levels rise above normal. Other laboratory studies may help identify the cause of hyperthyroidism.

Detailed explanation-4: -An increased level of iodine in your body can cause your thyroid to produce excess thyroid hormones. This can occasionally happen if you’re taking medicine that contains iodine, such as amiodarone, which is sometimes used to control an irregular heartbeat (arrhythmia).