Answer by
skm (432)
Underarm sweating is variable between people; just because your friend sweats more than normal doesn't mean there's a problem. Some medical conditions are known to cause heat intolerance, including hyperthyroidism, anxiety, menopause, hypoglycemia, pheochromocytoma, menopause, infection, reflex sympathetic dystrophy, and malignancy (such as lymphoma). Excessive sweating is often idiopathic, meaning that doctor's don't have a good reason why it occurs.