Excessive sweating of the armpits, hands and feet, also known as hyperhidrosis, occurs because the sweat glands are over-active. Botulinum toxin (botox) injections can help to control the symptoms of severe sweating by temporarily blocking the chemical signals from the nerves that stimulate the sweat glands. This treatment will improve confidence and day to day tasks as you no longer have to worry about smell or sweat marks.