What should you know about excessive sweating under armpits?

Underarm sweating may happen with heat, exercise, stress, hormonal changes, or a tendency to sweat more than the body needs for cooling. A clinician will ask whether both sides are affected, whether clothes become soaked, and whether the problem also involves the hands, feet, face, or sleep. New sweating can also occur with illness or medicines. Skin that stays damp may chafe, sting, or develop irritation, particularly after shaving or using fragranced products.

Apply a suitable antiperspirant to completely dry underarm skin, often at night if the product instructions advise it, and wash it off as directed. Choose loose, breathable fabrics and change damp clothing. Avoid applying strong products to freshly shaved or broken skin. If self-care is not enough, a clinician may discuss botulinum toxin injections, microwave sweat gland treatment, or another option after reviewing medicines, skin sensitivity, pregnancy, and breastfeeding. Record how often episodes occur and what brings them on.

Book an assessment when underarm sweating persists, disrupts clothing choices or sleep, begins abruptly, or is accompanied by sweating elsewhere. Get urgent help for sweating with fainting, confusion, chest discomfort, trouble breathing, or marked weakness. Heat Exhaustion, Hyperthyroidism, Hypoglycaemia, and Obstructive Sleep Apnoea can all be relevant possibilities depending on the accompanying features; underarm sweating alone cannot identify the cause.

Is my skin irritated by the product I use? Would testing or a medicine review help? Which underarm treatment fits my symptoms? How can I reduce friction and manage treatment-related redness?