A<unk>  is an enlarged thyroid gland that is located in the front of your neck producing thyroid hormones. Enlarged thyroid gland is able to produce too much, a little, or enough thyroid hormones. Thyroid hormones control the metabolism rate in the different organ systems such as the heart,liver,muscles,brain, and other parts of the body. Therefore, if the amount of these hormones decreased, the metabolism rate will be declined and the body will feel tired and cold. Also, releasing too much of these hormones can increase metabolism rate leading to fell warm and nervous.There are other symptoms such as tightness in the throat,cough, hoarseness, swallowing and breathing problems due to the effect of the thyroid mass on surrounding tissues. Risk factors for<unk>  includes; being a woman, being over age 40, being pregnant or in menopause, having a family history of autoimmune disease or<unk> , having been exposed to radiation as a child or having had radiation treatment to your neck or chest, and having a diet low in iodine.
Goiter
Goitre
Acne
Skin nodules
Deafness
Dry eyes
Airsickness
Chalicosis