Underarm sweating is part of the body's normal temperature regulation. Excessive sweating in this area is known as axillary hyperhidrosis. Whether it amounts to a condition requiring treatment depends, among other things, on its severity, the situations in which it occurs and how much it affects daily life.
Assessment distinguishes localised hyperhidrosis from sweating caused by medication or other medical conditions. Sweating that starts suddenly, night sweats or accompanying symptoms should first be medically investigated. Stress can make sweating worse, but it does not explain every case.
Depending on the findings, options may include antiperspirants or botulinum toxin treatment administered by a doctor. Device-based and surgical procedures are also available. These methods differ in their effects, duration and risks. Botulinum toxin has a temporary effect; injection discomfort and other side effects are possible. This does not allow universal success rates or fixed intervals between treatments to be specified.