In nearly 30 years of specializing in endocrine metabolic diseases, the most common is “hyperthyroidism”. People often ask me what “hyperthyroidism” is. The medical terminology refers to “thyrotoxicosis”: it is a clinical condition caused by an excess of thyroid hormones, whereas hyperthyroidism is limited to the thyroid gland. Thyrotoxicosis is caused by excessive synthesis and secretion of the hormone itself. Below I will often patients talk about the feelings, that is, the most typical form of medical records to explain to you to help you understand: patients often talk about “fear of heat, excessive sweating, wasting for several months or time unknown”, and no cause of fear of heat, palpitations, fatigue, bad temper, agitation, polyphagia, lethargy, stools 5 to 6 times / day in the paste! There was no pus or blood, no acute or severe symptoms, agitation, emotional instability, and insomnia. In the local according to the “chronic enteritis”, “neurosis” treatment is ineffective, some people see a lot of detours, and finally found our endocrinology. Hyperthyroidism is an organ-immune disease that most often affects the thyroid gland, the eyes, and, rarely, mucous swelling of the anterior tibia.