Excessive Sweating
Why am I sweating excessively, and what can help?
Excessive sweating — clinically known as hyperhidrosis — causes sweating well beyond what the body needs for temperature regulation. It can affect the underarms, palms, feet, or face, and for many patients it has a significant impact on…
What Causes Excessive Sweating?
Sweating is a normal physiological process regulated by the sympathetic nervous system. In patients with hyperhidrosis, the sweat glands are overstimulated — producing sweat at rates far beyond what is needed for thermoregulation, often with no clear thermal trigger. Primary hyperhidrosis, the most common form, has a strong hereditary component: the overactive sweating response is thought to result from abnormally heightened sympathetic nervous system activity and is not caused by another medical condition.
Secondary hyperhidrosis occurs as a result of an underlying cause — thyroid disorders, diabetes, menopause, obesity, certain medications, or neurological conditions. If secondary causes are suspected, addressing the root condition is the priority before considering local treatment.
At your consultation, we take a full medical history to distinguish primary from secondary hyperhidrosis and to confirm that anti-wrinkle injections are the most appropriate intervention for your presentation.
Types of Hyperhidrosis
Hyperhidrosis is classified both by its cause (primary or secondary) and by the area of the body affected. Treatment approach varies accordingly.
Axillary Hyperhidrosis
Excessive underarm sweating is the most commonly treated form with anti-wrinkle injections. Injections into the axillary sweat glands are clinically well-established, with most patients experiencing an 80–90% reduction in sweating for six to twelve months in a typical treatment course.
Palmar Hyperhidrosis
Excessive sweating of the palms affects handshakes, keyboard use, and grip. Anti-wrinkle injections can be used to treat palmar sweating, though this area requires more injection points and can be more uncomfortable. Discuss this at your consultation.
Plantar Hyperhidrosis
Excessive sweating of the soles of the feet, which can cause discomfort, odour, and skin maceration. Often occurs alongside palmar sweating. Injectable treatment is possible but involves multiple injection points across the sole — discuss with your doctor.
Craniofacial Hyperhidrosis
Sweating affecting the face, scalp, or forehead. Can be particularly distressing in professional or social settings. Anti-wrinkle injections in the forehead or scalp area can provide targeted reduction. A careful assessment of anatomy is required before treatment.
Secondary Hyperhidrosis
Sweating caused by an underlying condition — thyroid disorders, diabetes, menopause, infections, or medication side effects. Unlike primary hyperhidrosis, secondary hyperhidrosis often produces generalised sweating and may occur during sleep. Addressing the root cause is the primary intervention.
Menopausal Sweating
Hot flushes and increased sweating associated with menopause are driven by declining oestrogen levels affecting hypothalamic temperature regulation. While primarily a systemic hormonal issue, anti-wrinkle injections can provide localised relief in specific areas such as the underarms while hormonal management is considered.
Why Choose Volt Cartel for Hyperhidrosis Treatment in London?
Excessive sweating has different causes, and not every presentation is appropriate for immediate injectable treatment. Our doctors take a full medical history, discuss the pattern and triggers of your sweating, and ensure that primary hyperhidrosis has been correctly identified before proceeding. Secondary causes that require medical management are flagged clearly.
Botulinum toxin for axillary hyperhidrosis is one of the best-evidenced non-surgical treatments available. Multiple randomised controlled trials support its efficacy and safety profile for this indication. We use this treatment because the evidence for it is strong — not because it is profitable or fashionable.
Effective hyperhidrosis treatment depends on accurate injection placement across the affected area. We use a consistent grid pattern and, where appropriate, mapping techniques to ensure full coverage of the active sweat zone. This matters for both the longevity and the completeness of results.
The dose, technique, and follow-up interval are tailored to your individual sweating pattern and response. Patients with particularly challenging presentations or those treating multiple areas receive a fully bespoke protocol — not a one-size-fits-all approach.
Located at 86–90 Paul Street, EC2A 4NE — a short walk from Old Street, Liverpool Street, and Shoreditch High Street stations.
What to Expect From Hyperhidrosis Treatment in London
Anti-wrinkle injections for excessive sweating are a straightforward in-clinic procedure with no recovery time. Here is what to expect at your appointment:
- Consultation: A doctor reviews your medical history, confirms the pattern and severity of sweating, and ensures anti-wrinkle injections are the most appropriate treatment option for you.
- Before treatment: You will be asked not to shave the underarms for two to three days before your appointment, and to avoid applying deodorant on treatment day. A Minor's Starch-Iodine test may be applied to identify the active sweat zones.
- Treatment: A topical anaesthetic cream is applied first. Once the area is numb, injections are placed in a grid pattern across the treatment zone using a very fine needle. The process typically takes 30 to 45 minutes.
- Immediately after: Some minor redness and pin-point marks at injection sites are normal and resolve quickly. There is no downtime — you can return to normal activities immediately.
- Results timeline: Most patients notice a reduction in sweating within five to fourteen days of treatment, with full effect typically reached by two weeks.
- Duration: Results typically last six to twelve months, after which the treatment can be repeated. With successive treatments, some patients find the duration extends.
Sources and review basis
Excessive sweating can have no obvious cause, relate to another condition or occur as a medicine side effect. This guide uses NHS information for self-care and referral boundaries; individual diagnosis and treatment require an appropriate clinician.
Treatments that may be considered
These are relevant routes, not recommendations. Suitability depends on assessment, medical history and the specific cause of the concern.
Questions people ask
How long do anti-wrinkle injections for sweating last?
Results typically last six to twelve months for axillary (underarm) hyperhidrosis. Duration varies between individuals and depends on factors including the dose used, the area treated, and individual metabolism. Some patients find that successive treatments produce longer-lasting results. Your doctor will advise on a maintenance schedule based on your response.
Is hyperhidrosis treatment painful?
The underarm area is relatively comfortable to treat compared to other areas. A topical anaesthetic cream is applied beforehand, and most patients describe the sensation as mild stinging at each injection point. The procedure takes around 30 to 45 minutes and is generally well tolerated. Palmar and plantar treatments involve more injection points and can be more uncomfortable — we discuss this at consultation.
How quickly does hyperhidrosis treatment work?
Most patients begin to notice a reduction in sweating within five to fourteen days of treatment. Full results are typically visible within two weeks. If sweating does not reduce sufficiently within four weeks, a top-up can be arranged at your review appointment.
Is it safe to stop sweating in the underarms?
Yes — the body has millions of sweat glands distributed across the skin, and the underarms account for only a small fraction of total sweat production. Reducing sweating in the axillary area does not impair the body's ability to regulate temperature; it simply redirects this function to the rest of the skin surface. This is a well-established and medically accepted treatment with a strong safety record.
Can I have this treatment if I take medication for another condition?
Most medications are compatible with botulinum toxin treatment for hyperhidrosis. However, certain muscle-relaxant drugs and some antibiotics may interact with the treatment. Your doctor will review your full medication list at consultation and advise accordingly. Please bring a complete list of any medications or supplements you take.
How much does hyperhidrosis treatment cost at Volt Cartel?
Hyperhidrosis treatment at Volt Cartel is priced individually and confirmed at your consultation. The exact cost depends on the area treated, the dose required, and whether multiple areas are treated in a single appointment. Pricing is confirmed in full at your consultation — there are no hidden charges.
Do I need to do anything to prepare for my treatment?
For underarm treatment, please avoid shaving the area for two to three days before your appointment and do not apply deodorant or antiperspirant on the day. Avoid vigorous exercise immediately before treatment as this can increase blood flow and sweat gland activity. Your doctor will provide any additional preparation advice relevant to your specific treatment area at consultation.
What is the difference between clinical-strength antiperspirant and anti-wrinkle injections for sweating?
Clinical-strength antiperspirants work by temporarily blocking sweat ducts at the skin surface using aluminium salts. They require daily application and can cause skin irritation. Anti-wrinkle injections work at the nerve level, blocking the signal that triggers sweat gland activity. Effects last months from a single treatment session and are sometimes used for moderate to severe hyperhidrosis. Many patients who have tried clinical-strength products without success find some people find injectable treatment helpful where antiperspirants have not been enough.
Have the concern assessed properly
A consultation considers what you are seeing, possible causes, realistic options and whether any clinic treatment is appropriate — including none.