Excessive Sweating of the Feet (Plantar Hyperhidrosis) – Sydney

Excessive sweating of the feet is a common concern that can be uncomfortable and distressing for those affected. Many patients describe it as embarrassing or limiting in social and professional situations.
In some cases, excessive sweating can be genetic and may run in families.

Small, precise treatments using fine needles are used to help manage sweating in the feet.

Consultation for Excessive Sweating Assessment

A detailed consultation is important for anyone considering treatment for excessive sweating. The following areas are typically discussed:

Is there a family history of excessive sweating?
Have you had previous treatments?
Were you satisfied with the results?
How long did the results last?
Which areas of the body are affected (e.g. feet, underarms, back)?
Have you ever experienced any side effects such as temporary muscle weakness or perceived increase in sweating elsewhere?
What is your occupation and activity level? (For example, foot muscle strength can be important for dancers or athletes.)
Do you have any other relevant medical or lifestyle factors?

Examination

In some cases, your practitioner may perform an iodine starch test. The area is wiped with antiseptic and then dusted with starch powder to highlight where sweating is most active.
This helps map out the areas for precise treatment planning.

Choosing the Treatment Plan

Your clinician will assess the area and recommend an approach after reviewing your history and examination results.
Factors considered include:

Your previous response to treatment
Your preference for longevity versus subtlety
Past sensitivity or side effects
Budget and treatment goals

If longer-lasting results are desired, a higher dose may be recommended.
If a more conservative approach is preferred, a smaller dose may be used.

All treatment decisions are made collaboratively during consultation.

Pain Relief During Treatment

Because the soles of the feet can be sensitive, pain relief options are available:

Numbing cream (such as EMLA or LMX) applied 45 minutes prior
Ice for comfort and to reduce bruising risk
Nitrous oxide (“Happy Gas”)
Inhaled analgesic (Penthrox) if required

Most patients find the process manageable with these measures.

During the Procedure

The area is cleaned with antiseptic (e.g. alcohol-based solution)
Ice is briefly applied for comfort
Small, precise treatments in a grid-like pattern across the soles and along the toes
Gentle pressure is applied with gauze afterward

The entire process takes approximately 15–20 minutes.
Most people can return to regular activities shortly after.

What to Expect Afterwards

Some patients notice mild redness or small bumps that settle quickly
Occasionally, there may be minor swelling or tenderness for a short period

Possible Side Effects

Treatment for excessive sweating is considered low risk when performed by experienced professionals.
Possible side effects may include:

Mild bruising
Temporary redness or discomfort
Headache (reported in a small number of new patients)
Asymmetry (one side improving faster than the other)
Rare: infection (as with any skin procedure)
Very rare: temporary changes in muscle strength or perceived sweating in other areas

All procedures are performed under strict hygiene and safety standards.

Who Is Unsuitable for Treatment?

This treatment may not be suitable for:

Pregnant or breastfeeding individuals
People with specific neuromuscular or medical conditions (to be discussed during consultation)

Aftercare Instructions

Avoid strenuous exercise for the rest of the day
Do not massage or rub the treated area
Follow any additional care instructions provided by your clinician

What to Expect After Foot Sweating Treatment

Results typically begin to appear within 2 to 8 days
Maximum effect is usually seen around 3 to 4 weeks
A review appointment is recommended at 4 weeks to assess progress and discuss any additional treatment if desired

If one side improves faster than the other, this usually balances out before your review. If needed, further adjustments can be made at that time.

How Long Do Results Last?

Duration varies depending on metabolism, dose, and lifestyle.

Higher doses may last up to 8–12 months
Smaller doses may require earlier retreatment

When Should I Have My Next Treatment?

Most patients return when sweating gradually returns — typically around 9–12 months, though some prefer earlier maintenance depending on results and comfort level.

FAQs — Excessive Sweating of the Feet (Plantar Hyperhidrosis)

1. What causes excessive sweating of the feet?
This condition is usually due to overactive sweat glands. It can be influenced by genetics, stress, or temperature, and sometimes runs in families.

2. How does this treatment help?
Small, precise treatments are used to help manage sweating in the affected areas by targeting overactive sweat glands.

3. Is the procedure painful?
Because the soles of the feet are sensitive, most patients choose a numbing cream, ice, or Happy Gas to make the treatment more comfortable.

4. How long does the treatment take?
The procedure usually takes around 15–20 minutes. Most patients can return to normal daily activities soon afterward.

5. When will I notice results?
Results typically begin to appear within 2–8 days, with best results visible around 3–4 weeks.

6. How long do results last?
Duration varies between individuals. Most patients find results last several months, with some noticing longer-lasting effects depending on dose and lifestyle.

7. Are there any side effects?
Mild redness, bruising, or tenderness may occur but usually resolve quickly. Serious complications are very rare when performed by experienced practitioners.

8. Who shouldn’t have this treatment?
This treatment may not be suitable for individuals who are pregnant, breastfeeding, or have certain medical or neuromuscular conditions. Your practitioner will confirm suitability during consultation.