The armpit, also known as the axilla, is the area located beneath the junction of the upper arm and the shoulder. It contains various structures, including hair follicles, sweat glands, and lymph nodes. The skin in this region is sensitive and can be prone to irritation. Armpits play a role in regulating body temperature through sweating. The sweat produced by apocrine glands in the armpit can lead to body odor when it interacts with bacteria on the skin. Proper hygiene, such as regular washing and the use of deodorants, can help manage odor and maintain skin health.