Hyperhidrosis is the medical term for excessive sweating. It refers to any abnormal sweating, such as sweating when it’s not hot. People who sweat excessively often soak through their clothing or drip sweat. Regular antiperspirants don’t work well for those with this condition.
Botulinum Toxin Type A works by blocking the nerves responsible for activating your sweat glands. Normally, your nervous system activates your sweat glands when your body temperature rises. This is how your body automatically cools itself. In people with hyperhidrosis, however, the nerves that signal the sweat glands are overactive.
When you receive Botulinum Toxin Type A injections directly into the area of your body that commonly sweats, your overactive nerves are essentially paralyzed. When your nerves can’t signal your sweat glands, you don’t sweat. However, Botulinum Toxin Type A only prevents sweating in the specific area where it’s injected.
You can resume your normal activities immediately after receiving Botulinum Toxin Type A injections. It will take between two and seven days for you to stop sweating in the treated area. It can take two weeks for total dryness.
The effects of Botulinum Toxin Type A are temporary, which means you’ll need more injections in the future. For underarm sweating, dryness can last anywhere from four to fourteen months.
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