Excessive sweating (hyperhidrosis) of the plantar aspect of the foot is a common problem affecting many people. Besides being an uncomfortable hygienic condition, contributing to fungal infection and Athlete’s foot, it can be an equally embarrassing problem creating social and psychological concerns.
Botox injections for the bottom of the feet is a relatively new concept, but conforms well to the general increased awareness for aesthetic and hygienic concerns affecting daily life. Previously used safely in the foot for the treatment of spastic muscular conditions, such as in the Achilles tendon for spastic Cerebral palsy, Botox (botulinum toxin type A) has been used by plastic and aesthetic physicians for many years.
In 2004, the FDA approved Botox for the treatment of excessive sweating. When topical antiperspirants and other drying agents are ineffective, Botox has been used as a safe and effective method for the treatment of excessive sweating on the bottom of the feet. Its mechanism of action is to temporarily block the secretion of the chemical responsible for activating sweat glands and thus interrupts sweating at the area where is has been injected.
The administration of these injections is performed in the office following a local anesthetic injection to numb the bottom of the foot. The procedure is relatively quick and painless once anesthesia has been achieved.
Nothing can completely cure hyperhidrosis and this procedure is designed to control the condition. Sweating may return gradually on average within 6 months. Further injections may be required to maintain the desired effect at intervals varying between 7-16 months, depending on the individual patient.