What causes armpit sweating?

Armpit sweating, or axillary hyperhidrosis, is primarily caused by the body's thermoregulation process, where sweat glands become active to cool down the body. Factors such as heat, physical activity, and emotional stress can trigger this response. Additionally, genetic predisposition and certain medical conditions may contribute to excessive sweating in this area. Hormonal changes, such as those during puberty or menopause, can also play a role.