Graves disease

The thyroid is located in the base of the neck, just below the Adam's apple. It has a butterfly shape. After a lap, or cutting your thyroid gland is located on each side of the trachea.
Thyroid production, storage and release of thyroid hormones into the bloodstream. These hormones, called T3 and T4, in almost every cell in the body to run, and help control the body's metabolism.
If you have too little thyroid hormone in the blood, your body slow down and weaken. This condition is called hypothyroidism. If you have a lot of blood thyroid hormone, your body speed up. This condition is called hyperthyroidism.
Determine the amount of thyroid hormones and adjusted to the other is in the brain called the pituitary gland is located. In the second part of the brain, the hypothalamus, pituitary gland helps to do your homework.
  send a message to the pituitary gland in the hypothalamus.
  pituitary, in turn, controls the thyroid.

Thyroid, pituitary and hypothalamus is jointly controlled by the thyroid hormone in your body number. These agencies will work like a thermostat to control room temperature.
As the reaction at room temperature the thermometer, the pituitary is sensitive to thyroid hormone in the blood volume. If your thyroid hormone level is low, the pituitary gland "open heat" release thyroid-stimulating hormone (TSH). TSH signal is sent to your thyroid gland produce more hormones and release into the bloodstream directly.
When thyroid hormone levels return to normal, feeling that the pituitary and the "heating off", created and slow return to normal TSH.