Pressure and postural hyperhidrosis is the sweating response to pressure on one side of the body during position changes and lateral recumbency. It is a manifestation of hyperhidrosis. Hyperhidrosis is a disorder in which excessive sweat gland secretion is caused by sympathetic hyperexcitation. The sympathetic nerve governs sweating throughout the body. Under normal circumstances, the sympathetic nerve regulates body temperature by controlling sweating and heat dissipation. In hyperhidrosis, however, sweating and facial flushing are completely out of control. The excessive sweating and facial flushing leave the patient in a daily state of helplessness, agitation or panic. What can cause stress and postural hyperhidrosis? Generalized hyperhidrosis can be an abnormal physiological response or one of the symptoms of certain diseases such as hyperthyroidism and diabetes mellitus. Localized hyperhidrosis can be due to sympathetic nerve damage or an abnormal response with increased secretion of choline acetate, resulting in excessive sweat production by the small sweat glands. Hyperhidrosis can be broadly classified into three categories from the pathogenesis: 1. It is caused by systemic diseases such as endocrine disorders (hyperthyroidism, diabetes, hyperpituitarism, etc.), neurological diseases, some infectious diseases (malaria, tuberculosis, etc.) and weakness due to long-term illness. As soon as these systemic diseases are controlled the excessive sweating can be resolved. 2, psychogenic sweating, caused by high tension and emotional excitement, is due to sympathetic dysregulation, internal use of some sedative drugs (such as atropine, probenecid, belladonna combination, etc.) has a temporary effect, but there are side effects such as dry mouth. 3, gustatory sweating, belongs to another physiological phenomenon, such as eating certain stimulating food (chili, garlic, ginger, cocoa, coffee) caused by excessive sweating, this situation generally do not need to be treated, only to avoid the mouth.