Hyperhidrosis can be embarrassing when it occurs. Having a medical evaluation to check for underlying medical conditions that may be causing the excessive sweating should be done first before pursuing treatment. There are a range of therapeutic options: topical and medications, iontophoresis, surgery, and injections of botulinum toxin A into the sweat glands. The latter is a very effective for treating hyperhidrosis. The nerves that cause sweat glands to over produce sweat are blocked. Injections typically need to be repeated twice a year for maintaining good control.