What to expect from Botox for underarm sweating

Botulinum toxin reduces sweating by blocking the local nerve signals that tell sweat glands to produce sweat. The injections are placed in the affected underarm area rather than into a vein or muscle throughout the body. Your clinician may mark the treatment zone and discuss whether both underarms need treatment. The effect is temporary, so sweating can return as nerve activity recovers.

Tell the clinician about medicines, allergies, pregnancy or breastfeeding, neuromuscular conditions, and any infection or irritation in the underarm skin. Arrive with clean skin and follow any instructions about deodorant or hair removal. After treatment, keep the area clean and avoid rubbing or pressing on the injection sites for the period advised by your clinician. Mild tenderness, small bumps or bruising can occur. Arrange review if the sweating remains troublesome or the response is uneven.

Contact your clinic promptly if increasing redness, warmth, swelling, drainage or worsening pain develops in an underarm. Seek urgent medical help for trouble breathing or swallowing, widespread weakness, marked dizziness, or symptoms that spread beyond the treated area. These symptoms need assessment rather than waiting for the treatment effect to settle.

Ask which underarm areas will be treated, how discomfort will be managed, when improvement should be assessed, and what activities or products to avoid afterward. You can also ask how recurring sweating will be handled if the effect fades.