How is neurotoxin used in the treatment of hyperhidrosis?
This medication acts on nerve endings, causing denervation of the sweat glands and, as a result, reducing sweat secretion. The effect can be observed after just a few days, and the patient may enjoy freedom and comfort for approximately 6 months, or slightly longer if the preparation has been administered in an appropriate dose.
Before the procedure, the areas affected by hyperhidrosis are identified. This is done using the so-called Minor’s test, which involves applying iodine to a selected area of the body and dusting it with potato starch. After just several seconds, the areas affected by excessive sweating become darker. Injection of the appropriate dose of neurotoxin is usually painless, although much depends on the patient’s sensitivity level, which is why an anaesthetic cream is often used and/or the area is cooled with ice. After administration of the preparation, local discomfort and swelling may occur; however, apart from this, the treatment does not cause other undesirable symptoms. To achieve the expected effect, a single treatment is usually sufficient, and it should then be repeated individually every 6–12 months.