Treatment of Profuse Sweating (Hyperhidrosis)

Initial Critical Assessment

The American Heart Association recommends immediately assessing for life-threatening heat-related illness in patients presenting with profuse sweating, with symptoms including altered consciousness, confusion, seizures, or collapse indicating heat stroke requiring emergency intervention 1, 2
The American Academy of Pediatrics suggests measuring rectal temperature if heat stroke is suspected, with a temperature greater than 40°C/104°F confirming the diagnosis 3, 2
Associated symptoms of heat-related illness include headache, dizziness, nausea, vomiting, muscle cramps, or syncope, according to the American Heart Association 1, 4

The American Heart Association recommends beginning immediate whole-body cooling via cold water immersion up to the chin while activating EMS if heat stroke is suspected, with this being the single most important intervention and should not be delayed 1, 2
Ice water immersion is the gold standard for cooling, and should be continued until rectal temperature drops to 38.6°C (101.4°F) to prevent hypothermia, according to the American College of Sports Medicine 2
Alternative cooling methods if immersion is unavailable include ice massage to groin/axilla, wet towels with fanning, or water-ice therapy, with the American College of Sports Medicine recommending these methods as effective alternatives 5, 2

The American Heart Association recommends providing oral carbohydrate-electrolyte solutions rather than water alone for exercise-induced sweating with dehydration, with the volume consumed exceeding sweat losses 6
The American Academy of Pediatrics suggests screening for secondary causes of hyperhidrosis, including hyperthyroidism, pheochromocytoma, medications, menopause, and infections, before treating as primary hyperhidrosis 7
The British Association of Dermatologists recommends considering oral retinoids for patients with thermoregulatory dysfunction, although evidence is limited, and avoiding extreme temperatures and outdoor activity during peak heat 8, 4