About Hyperhidrosis

Hyperhidrosis is the term for excessive sweating that usually occurs in the hands, trunk, feet and armpits.

The condition is generally considered to be the result of inherited characteristics which cause the sympathetic nervous system to become more reactive to the environment than is normal.

In such cases even a small amount of perceived threat or anxiety can cause an overstimulation of that part of the brain which controls sweating.

It is not uncommon to have more than one area being affected with excessive sweating in combination. For example, sweating can often occur in both the underarms and feet simultaneously.


Cosmetic injections such as Botulinum Toxin can often significantly decrease sweating with minimal side effects.

The injections work by blocking the action of the nerves that supply the sweat glands and stopping them producing sweat.

Using a very fine needle, the injections are placed into the skin of the affected site in about 15 areas spaced approximately 1 cm apart.

Sometimes an iodine or start test is carried out beforehand to locate the area where sweating is greatest.


Is the treatment painful?

The treatment requires multiple injections. While the needles are very fine it is still uncomfortable and sometimes painful, particularly in the palms or soles of the feet.

We use local anaesthetic blocks for treatment of the hands or feet and topical anaesthetic for the armpits to help decrease the pain.

How long do the results last?

It takes 3 to 7 days days following treatment for the noticeable improvement. A slow return to sweating approximately 7-8 months following the hyperhidrosis treatment is usual but it is not uncommon to get 12 months of relief. The treatment can then be repeated.

Medical terms



The costs of the treatments vary and this is dependant on what area of the body is being treated and how small or large the affected area is.

You will be required to have an initial consultation with our Plastic Surgeon who will recommend a treatment plan.

A tailored quote will be provided to you prior to any treatment. For more information please visit the fee section on the FAQ page.

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Randwick Plastic Surgery