Underarm Hyperhidrosis

Underarm sweating (hyperhidrosis)

Struggling with Excessive Sweating?

Our specialised treatments for hyperhidrosis can help you manage sweating and regain confidence in your daily life.

What is axillary hyperhidrosis?

Excessive sweating or hyperhidrosis can be a significant problem, causing a great deal of stress. There are two main forms of hyperhidrosis:

Primary Hyperhidrosis, which is inherent to the person and has no underlying trigger. Usually, this form of hyperhidrosis starts under the age of 25, occurs symmetrically in the body and tends to be worse during the day and much better at night time.

Secondary Hyperhidrosis is important to detect and diagnose. This occurs when there is an underlying medical condition or regular medication that causes the excessive sweating.

Hyperhidrosis - Botulinum Toxin

Botulinum Toxin for Underarm Sweating

Botulinum toxin injections are a highly effective treatment for axillary hyperhidrosis, or excessive underarm sweating. By temporarily blocking the nerve signals that activate sweat glands, this treatment significantly reduces sweat production—often with life-changing results for patients who’ve struggled with persistent sweating.

Why It Works so effectively?

Botulinum toxin targets only the overactive sweat glands in the treated area without affecting the rest of the body’s ability to cool itself. Most patients experience a 70–90% reduction in sweating, with results lasting 4 to 6 months or longer. It’s quick, virtually painless, and doesn’t require downtime—making it a convenient, medically proven solution.

Why Treat Excessive Sweating with a Dermatologist?

Seeing a dermatologist for excessive sweating ensures you receive expert assessment and access to the most effective, evidence-based treatments. Dermatologists can accurately diagnose the type and severity of hyperhidrosis, rule out underlying causes, and offer botulinum toxin injections at Medicare subsidised fees, that are not available through general clinics.

At Hunter Coast Dermatology & Laser, our treatments are medically led and eligible for Medicare rebates when certain criteria are met, helping to reduce your out-of-pocket costs. Trust your care to experienced professionals who prioritise both results and safety.

Botulinum toxin is the most effective way to treat excessive sweating of the underarms

Eligible patients receive a Medicare rebate when you are treated for axillary hyperhidrosis by a Dermatologist for up to 3 treatments per calender year.

Frequently Asked Questions

How does botulinum toxin work to treat hyperhidrosis?

Botulinum toxin works by blocking the nerve signals that trigger sweat glands to produce sweat. By inhibiting these signals, the sweat glands’ activity is reduced, leading to a significant decrease in sweating in the treated areas. This effect is temporary, and the procedure needs to be repeated periodically to maintain results.

What areas of the body can be treated with botulinum toxin for excessive sweating?

Botulinum toxin can be used to treat several areas affected by excessive sweating, including the underarms, palms of the hands, soles of the feet, and the face. Your dermatologist will assess the specific areas you are concerned about and tailor the treatment accordingly.

How long does the treatment take, and is it painful?

The botulinum toxin treatment for hyperhidrosis is relatively quick, typically taking about 20-30 minutes depending on the number of areas being treated. While the injections may cause some discomfort, it is generally minimal and brief. Many patients describe the sensation as a pinching feeling, and a local anesthetic or cooling device may be used to enhance comfort.

How long do the results of botulinum toxin treatment last?

Results from botulinum toxin treatment typically begin to appear within a few days to a week after the procedure. The effects usually last between 4 to 12 months, depending on the individual and the area treated. Regular follow-up treatments are necessary to maintain optimal results and manage excessive sweating effectively.

Are there any side effects or risks associated with the treatment?

Botulinum toxin treatment is generally safe with minimal risk of side effects. Common side effects may include temporary redness, swelling, or tenderness at the injection sites. Rarely, some patients may experience mild headaches or localized weakness in the treated area. It is important to follow post-treatment care instructions and consult with your dermatologist if you have any concerns or unusual symptoms.