Grave’s disease is an autoimmune disease that leads to a generalized overactivity of the entire thyroid glad (hyperthyroidism). Grave’s disease is caused by a malfunction in the body’s disease-fighting immune system, although the exact reason why this happens is still unknown.
Symptoms of Grave’s disease include: anxiety and irritability, a fine tremor in your hands or dingers, heat sensitivity and an increase in perspiration, weight loss, enlargement of your thyroid gland, change in menstrual cycles, erectile dysfunction, bulging eyes, fatigue, thick, red skin, and a rapid or irregular heartbeat.
Graves’ Disease, Mayo Clinic (Mar. 6, 2018), https://www.mayoclinic.org/diseases-conditions/graves-disease/symptoms-causes/syc-20356240