Botulinum toxin type A (Botox®) is a medication that is injected subdermally into the skin to treat hyperhidrosis also known as overactive sweat glands. Botox® acts by temporarily blocking neurotransmitters that stimulate sweat production. Botox® works well for axillary (underarm) hyperhidrosis. It is injected at approximately 15-20 sites in the underarm. A decrease in sweating is noted after the injections. However repeat treatments are needed every 3-6 months. Botox® injections are not painful.  The injections feel similar to a pinprick. Botox® injections also have been used to treat palmar (overactive sweat glands in the hands) and facial hyperhidrosis with some success.  At Laser Clinique in San Diego, overactive sweat glands can be easily treated with this revolutionary treatment.