There are several possible causes for high thyroid levels, including Graves' disease, toxic adenoma, Plummer's disease and thyroiditis, according to Mayo Clinic. The general term used when a patient has an overactive thy... More » Health Conditions & Diseases

High thyroid levels, or hyperthyroidism, is most commonly caused by Graves’ disease, but can also be caused by multinodular or toxic nodular goiters, excess consumption of iodine or medications that contain iodine, accor... More » Health Conditions & Diseases

Treatment for high TSH thyroid levels, also known as hypothyroidism, typically involves thyroid replacement medication such as levothyroxine or synthroid, which are synthetic thyroid hormones, according to Healthline. Th... More »

Hyperthyroidism is caused by conditions such as toxic adenoma, Grave's disease, thyroiditis and Plummer's disease, explains the Mayo Clinic. The thyroid gland is fairly small but produces two important hormones that dire... More » Health Conditions & Diseases

Possible causes of an overactive thyroid, or hyperthyroidism, include Graves' disease, thyroiditis, a thyroid nodule or too much iodine levels in the body, according to WebMD. Taking excessive thyroid hormone medications... More »

High thyroid peroxidase antibodies indicate that the patient has an autoimmune disorder such as Graves' disease or Hashimoto's disease, according to Mayo Clinic. Most people who are diagnosed with thyroid disease typical... More »

The most common side effect of high thyroid levels, or hyperthyroidism, is a protruding lump in the throat, which is also known as a goiter, according to WebMD. The heartbeat is sometimes irregular or very fast. Hair fal... More » Health Conditions & Diseases