Sudden profuse sweating is usually seen for the following reasons: 1, the occurrence of hypoglycemia, such as a history of diabetes, the use of hypoglycemic drugs overdose, or after taking drugs did not eat in a timely manner, it is easy to produce hypoglycemia, hypoglycemia occurs, adrenaline secretion increases, causing systemic vasoconstriction, a large number of cold sweat symptoms. 2, acute left heart failure attack, patients with hypertension or a history of heart disease, performance 3.Shock, various causes of shock, such as infectious shock, neuroinflammatory shock and cardiogenic shock, can be manifested as cold extremities, profuse sweating, accompanied by the appearance of hypotension. 4.Overuse of antipyretic drugs, some fever patients due to the use of antipyretic drugs overdose, resulting in excessive sweating, and even produce The performance of shock. Therefore, a sudden large amount of sweating often indicates that the body is in an unhealthy state, and it is important to clarify the cause in time and take targeted treatment.