What should you know about body odour armpits?

The underarms contain sweat glands and a warm skin fold, making them a common place for odour to form. Fresh sweat may have little smell; odour appears as normal skin bacteria break down components of sweat. Hair, damp clothing, friction, and a covered skin surface can hold moisture against the area.

Strong or persistent smell can occur with excessive sweating, an irritated fold, or infection. Look for clues such as itching, redness, scaling, tenderness, lumps, drainage, or a change affecting only one side. These details help distinguish a sweat-related concern from a skin problem.

Wash gently, rinse away cleanser, and dry the underarms completely before dressing. Wear breathable clothing, change after heavy sweating, and avoid applying fragranced products to cracked or inflamed skin. Antiperspirant works on sweat; deodorant is mainly for odour. Follow the label and stop a product that causes burning or a rash.

When daily care is not enough, a dermatologist may offer [Prescription Antiperspirant](/treatments/medical-dermatology/prescription-antiperspirant/) or [Botox For Sweating](/treatments/injectables/botulinum-toxin-for-hyperhidrosis/). Read more about the symptom at [Body Odour](/symptoms/body-odour/).

Book an appointment if underarm odour persists with clean clothing, is accompanied by a rash, pain, swelling, drainage, or a lump, or comes with sweating that disrupts sleep or normal activities. Seek urgent care for rapidly spreading redness, severe pain, fever, or sudden illness.

Ask whether excess sweating, irritation, infection, or another condition is contributing. Discuss which antiperspirant strength suits your skin, how to prevent irritation, and whether a treatment for sweating is appropriate for your health and daily routine.