Thyroid diseases may cause panic attacks, such as hyperthyroidism and subacute thyroiditis. 1. Hyperthyroidism: high thyroid hormone, causing high metabolic symptoms, may have panic, palpitations and other cardiac system manifestations, but also fear of heat, excessive sweating, hand tremors, agitation, irritability, diarrhea, fatigue and other symptoms. 2. Subacute thyroiditis: In thyrotoxicosis, thyroid tissue is destroyed, causing the release of thyroid hormones into the bloodstream, which can cause symptoms such as panic. In addition to the thyroid disease can cause panic, also can be seen in nervousness, anxiety, stay up late and other physiological phenomena; and arrhythmia, such as sinus tachycardia, atrial fibrillation, ventricular tachycardia, etc.; as well as anemia, hypoglycemia, pheochromocytoma and other diseases. People with panic attacks should go to the hospital in time.