Hyperhidrosis (excessive sweating) treatment (Treatment of hyperhidrosis (primary focal and secondary))
A range of treatments to reduce excessive sweating that is interfering with daily life, from strong antiperspirants and a small electric-current treatment to injections, tablets and, rarely, surgery.
✓ Medically reviewed by a GMC-registered consultant · last reviewed September 2026 · next review September 2027 · how we review
In short
- Most excessive sweating is harmless 'primary' hyperhidrosis, but new, generalised or unexplained sweating should be checked for an underlying cause first.
- Treatment is stepped: strong antiperspirants, then iontophoresis, botulinum toxin injections or tablets, and surgery only as a last resort.
- Most treatments reduce sweating rather than stop it, and effects such as those of injections wear off and need repeating.
- Surgery (sympathectomy) can cause troublesome compensatory sweating elsewhere that may be permanent, so it is reserved for severe cases.
A plain-English summary. The detail — including risks and recovery — is below.
At a glance
A general guide. Your specialist will give you advice for your situation.
Can substantially reduce sweating and the soaking of clothes
Invasive treatments are not appropriate before checking for and treating any underlying cause of sweating.
No recovery needed. Antiperspirants may irritate at first, easing with correct use. Tablet side effects, if troublesome, settle after stopping or...
A check for and management of any underlying cause before invasive treatment.
No recovery needed. Antiperspirants may irritate at first, easing with correct use. Tablet side effects, if...
You can usually return to normal activities straight away. Sweating reduces over a few days, and the effect...
Sessions are repeated over weeks to build and maintain the effect, often continued with a home device.
A hospital stay and recovery period are needed. Sweating in the treated area usually stops quickly, but...
What is hyperhidrosis (excessive sweating) treatment?
Hyperhidrosis means sweating much more than the body needs for temperature control. It commonly affects the underarms, palms, soles or face, and can be enough to soak clothing, interfere with work and tasks, and affect confidence and mood.
Most cases are 'primary focal' hyperhidrosis, which usually starts in childhood or the teens, affects specific areas symmetrically, and has no underlying disease. Sometimes sweating is 'secondary', caused by another condition (such as an overactive thyroid, diabetes or menopause) or a medicine, and treating the cause is then key. Generalised or new sweating, or sweating with night sweats, weight loss or feeling unwell, should be checked for an underlying cause first.
Treatment is usually stepped: strong antiperspirants first, then options such as iontophoresis (passing a small electric current through water), botulinum toxin (Botox) injections, anticholinergic tablets, a microwave-based device, and, rarely, surgery. No single treatment suits everyone, and most reduce sweating rather than stopping it completely.
The more invasive options, especially surgery to cut the sweating nerves, carry real risks, including troublesome sweating elsewhere, so they are reserved for severe cases after simpler options have failed.
Types, options & approaches
There may be different ways to do this. The right approach depends on the clinical question and your circumstances.
Botulinum toxin vs sympathectomy surgery
| Botox injections | Sympathectomy surgery | |
|---|---|---|
| How it works | Blocks sweat-nerve signals | Cuts the sweating nerves |
| Lasts | Several months, then repeat | Intended to be permanent |
| Main downside | Temporary; needs repeating | Risk of permanent sweating elsewhere |
| When used | Common, especially underarms | Last resort, severe cases |
Most people never need surgery; injections and other options control sweating for many without its risks.
Preparing for your treatment
- See your GP first; they will check whether the sweating is primary or might have an underlying cause needing investigation.
- Mention any night sweats, weight loss, feeling unwell, or sweating that is new, one-sided or all over, as these need looking into.
- List all your medicines, as some can cause sweating and stopping or changing them may help.
- Be ready to describe where you sweat, how much it affects your life, and what you have already tried.
- For botulinum toxin or surgery, ask exactly what is involved, how long the effect lasts, and the specific risks.
- If considering surgery, make sure you understand the chance and impact of compensatory sweating elsewhere.
What happens
Treatment usually starts with your GP, who checks for any underlying cause and recommends a strong antiperspirant, applied to dry skin at night. If that is not enough, you may be referred to dermatology.
Iontophoresis involves resting your hands or feet in trays of water (or using pads for the underarms) while a small, usually not painful electric current passes through; it is repeated over several sessions, and a home device can keep it up. Botulinum toxin treatment involves multiple small injections into the affected skin, for example across each underarm, sometimes after cooling or local anaesthetic; sweating reduces over a few days and the effect lasts months. Anticholinergic tablets are taken by mouth and adjusted to balance benefit against side effects.
More invasive options are arranged through specialists. A microwave-based device treats the underarms in a clinic session. Surgery (endoscopic thoracic sympathectomy) is done in hospital under general anaesthetic to interrupt the sweating nerves, and is considered only for severe cases after careful discussion of its risks.
Is this treatment right for me?
A good consultation should explore whether it's the right choice for you now — including reasons to wait or consider something else.
May not be suitable if…
- Invasive treatments are not appropriate before checking for and treating any underlying cause of sweating.
- Botulinum toxin to the palms or soles is used cautiously because it can cause temporary muscle weakness affecting grip.
- Surgery is not suitable for most people and is a last resort, given the risk of permanent compensatory sweating.
- Anticholinergic tablets may be unsuitable for people with certain eye, heart, bladder or bowel conditions.
Delay or rearrange if…
- Sweating is new, generalised, one-sided, or comes with night sweats, weight loss or feeling unwell, until a cause is investigated.
- A medicine may be causing the sweating and could be reviewed or changed first.
- There is active skin infection or broken skin at the treatment area.
- You are pregnant or breastfeeding and a proposed treatment is unsuitable.
Alternatives to discuss
- Strong antiperspirants and lifestyle measures as first steps.
- Iontophoresis for hands, feet and underarms.
- Botulinum toxin injections, especially for the underarms.
- Anticholinergic tablets where appropriate.
- Treating an underlying condition or changing a causative medicine for secondary sweating.
Before you decide
Use this as a shared-decision checklist. The aim is not just “can this be done?”, but whether it is right for you, now, with the risks and alternatives clearly understood.
What matters most to me?
Think about symptoms, daily life, work, caring responsibilities, sport, fertility, travel, appearance and anxiety — the right choice depends on your priorities, not just the medical facts.
What are all my options?
Ask about waiting, monitoring, medicines, rehabilitation, a smaller or larger procedure, a different test, NHS referral, or a second opinion where that would help.
What would make me pause?
Active infection, pregnancy, unstable medical problems, smoking, medicines that increase bleeding, poor support at home, or feeling pressured are all reasons to slow down and get tailored advice.
What happens if I do nothing today?
For some problems, waiting is safe; for others, delay can make treatment harder. A good consultation should explain the trade-off in plain English.
Comfort, sedation or contrast choices
If local anaesthetic, sedation, contrast or pain relief is used, ask what is planned, why, and what it means afterwards.
Benefits
- Can substantially reduce sweating and the soaking of clothes
- Can improve confidence, comfort and the ability to work and do daily tasks
- Offers a stepped choice, so many people are helped without invasive treatment
- Botulinum toxin can give months of relief, especially for underarm sweating
- Identifying and treating an underlying cause can resolve secondary sweating
Risks & complications
- Skin irritation or stinging from strong antiperspirants
- Tingling, dryness or irritation from iontophoresis
- Soreness or short-lived bruising from injections
- Dry mouth, blurred vision or constipation from anticholinergic tablets
- Temporary muscle weakness near injection sites (a reason botulinum toxin is used cautiously in the hands)
- Injections or other treatments not working as well as hoped
- Needing repeated treatments as effects wear off
- Side effects from tablets limiting their use
- Compensatory sweating elsewhere on the body after surgery, which can be severe and permanent
- Surgical complications such as nerve injury, lung problems or, rarely, a drooping eyelid (Horner's syndrome)
- Serious reactions to anaesthetic with surgery
The key safety points are to rule out an underlying cause when sweating is new, generalised or comes with other symptoms, and to treat the most invasive options with real caution. Surgery to cut the sweating nerves can leave you sweating heavily elsewhere instead (compensatory sweating), which may be permanent and, for some, worse than the original problem. Before any invasive treatment, ask how likely it is to help, how long it lasts, and the specific risks for your situation.
Published figures to discuss
How well each treatment works, and the risk of side effects, varies by the option chosen and by the individual. The most important quantified risk is compensatory sweating after sympathectomy surgery, which is common; reported rates vary widely between studies and surgical techniques, so figures should be read as a guide. For the less invasive treatments, rates are not meaningfully fixed and effects simply wear off and are repeated.
| Figure | Reported range | How to interpret it | Source / confidence |
|---|---|---|---|
| Response to antiperspirants, iontophoresis or tablets | Variable | These are usually tried before irreversible surgery. Side effects, adherence and the body site being treated determine whether they are practical. | Guide sourcesClinical context |
| Botulinum toxin duration | Typically several months, often around 4-9 months | Works best for armpits. Palms and soles can be painful to inject and may cause temporary weakness. | Endoscopic thoracic sympathectomy: technique and results — PMCpmc.ncbi.nlm.nih.govSource-linked context |
| Compensatory sweating after sympathectomy | Reported very variably, from roughly a third of patients up to the majority in some series | Depends heavily on the nerve levels operated on and the study; it can be mild or severe and may be permanent, so surgery is a last resort. | Endoscopic thoracic sympathectomy: technique and results — PMCpmc.ncbi.nlm.nih.govSource-linked context |
| Regret after sympathectomy | Recognised | Because sympathectomy is difficult to reverse and compensatory sweating can be worse than the original problem, consent should be especially cautious. | Guide sourcesClinical context |
These are literature figures, not a personalised prediction. Your own risks and likely benefits depend on your circumstances, your health, and how your care is carried out and followed up.
What happens afterwards
Most treatments need little or no recovery, but the response builds over days to weeks and many treatments must be repeated; surgery is the exception and involves a hospital recovery.
- Some skin irritation early on with antiperspirants
- A gradual reduction in sweating over days after injections
- Needing to repeat injections or iontophoresis to keep the benefit
- Manageable, dose-related side effects from tablets
- Some compensatory sweating elsewhere after surgery
Aftercare
- Apply antiperspirants to completely dry skin at night, and avoid shaving the area just beforehand to reduce stinging.
- If antiperspirants irritate, ask about a short course of a mild steroid cream to settle the skin.
- Keep up iontophoresis maintenance sessions or home use as advised.
- Note when botulinum toxin wears off so repeat treatment can be planned.
- Report troublesome tablet side effects so the dose can be adjusted.
- After surgery, follow wound-care advice and report compensatory sweating, which the team should have warned you about.
- Use simple measures too: breathable fabrics, absorbent insoles, and managing triggers like heat, alcohol and spicy food.
- Underlying causes checked by your GP
- List of current medicines reviewed for sweating side effects
- Strong antiperspirant tried correctly (dry skin, at night)
- Clear understanding of how long any injection effect lasts
- For surgery, the risk of compensatory sweating fully understood
- Plan for repeat treatments or home maintenance
- Clinic contact details for problems or side effects
Scars and how they heal
Most treatments leave no scars. Botulinum toxin and iontophoresis leave the skin intact, with at most temporary needle marks or bruising from injections. The microwave device does not cut the skin. Surgery (sympathectomy) is keyhole, leaving small scars in the chest or armpit area; your surgeon can describe their likely size and position.
⚠ Get urgent help if…
- New, generalised or one-sided sweating, especially with night sweats, weight loss or fever — see your GP
- Feeling generally unwell, with a racing heart, tremor or weight change (possible thyroid or other cause)
- Severe or spreading skin irritation from antiperspirants
- After surgery: breathing difficulty, chest pain, a drooping eyelid, or wound infection
- After surgery: heavy, distressing sweating elsewhere on the body
- Signs of infection at any injection or wound site
Who to contact: your clinician, clinic or test provider first (keep their number to hand). For urgent advice when you can't reach them, call NHS 111. In an emergency, call 999.
General guidance — it doesn't replace the specific advice your specialist gives you.
Results & realistic expectations
A good result is sweating reduced enough to let you get on with work, tasks and social life comfortably. Many people do well with antiperspirants, iontophoresis or botulinum toxin without needing anything invasive, and treating an underlying cause can resolve secondary sweating.
Most treatments reduce rather than abolish sweating, and several wear off and need repeating. Surgery can stop sweating in the treated area but cannot guarantee you will not sweat more elsewhere, which is why it is a last resort. No treatment guarantees a permanent, side-effect-free cure for everyone.
How long results last depends on the treatment. Antiperspirants and iontophoresis work only while continued. Botulinum toxin typically lasts several months, sometimes up to a year, then needs repeating. The microwave device aims for a longer-lasting reduction. Surgery is intended to be permanent for the treated area, but the trade-off is the risk of permanent compensatory sweating elsewhere.
Related tests, treatments or support
Treatments are often combined or used in sequence, for example antiperspirants alongside iontophoresis, or botulinum toxin for the underarms with other measures for hands or feet. If sweating is secondary, treating the underlying condition or changing a causative medicine is combined with symptom control. Lifestyle measures support all of these.
Follow-up & long-term care
Follow-up depends on the treatment. Your GP or dermatology team reviews how well antiperspirants or tablets are working and adjusts the plan. Botulinum toxin is reviewed when it wears off to plan repeats. After surgery, follow-up checks healing and asks specifically about compensatory sweating. Go back if sweating is not controlled, side effects are troublesome, or new symptoms suggest an underlying cause.
- Ongoing use of antiperspirants or home iontophoresis where these are the chosen treatment
- Planned repeat botulinum toxin sessions as the effect wears off
- Dose review and monitoring for anticholinergic tablets
- Lifestyle measures: breathable clothing, absorbent insoles, trigger avoidance
- Review of any underlying condition or causative medicine over time
Repeat, follow-on and what comes next
- Most non-surgical treatments are repeated, as antiperspirants, iontophoresis and injections wear off.
- Doses and choices are often adjusted to balance benefit against side effects.
- Compensatory sweating after surgery is difficult to reverse, so the decision needs careful thought beforehand.
Ask what happens if the result is unclear or needs repeating, and what is included if further tests or follow-up are needed.
What good aftercare looks like
- A check for and management of any underlying cause before invasive treatment.
- Honest information on how long each treatment lasts and when to repeat it.
- Full counselling on compensatory sweating before any surgery, with follow-up that asks about it.
- A named contact for side effects or treatments that are not working.
- Support for the emotional impact, as excessive sweating can affect confidence and mood.
What affects the cost
Costs vary a great deal between people and providers, and we don't publish prices. What matters is understanding what drives the cost and making sure your quote is complete. The main things that affect it:
- Which treatment is chosen, from antiperspirants to injections or surgery
- For botulinum toxin: the number of injection sites and how often it is repeated
- Number of iontophoresis sessions, and whether a home device is bought
- Specialist and facility fees for the microwave device or surgery
- Anaesthetic and hospital costs for surgery
- Any tests to look for an underlying cause, and follow-up appointments
- Exactly which treatment, and how many sessions or injections, are included
- How often repeat treatment is likely to be needed and its cost
- The clinician, facility and (for surgery) anaesthetic fees
- Follow-up appointments and review
- What happens, and the cost, if the treatment does not work or wears off quickly
- For surgery, what is offered if compensatory sweating develops
On the NHS? Strong antiperspirants and assessment for an underlying cause are widely available on the NHS, with iontophoresis or tablets sometimes offered; botulinum toxin, the microwave device and surgery are often limited on the NHS and frequently obtained privately.
You're entitled to your total cost in writing — including reports, follow-up and what happens if the result is inconclusive — before you decide.
Consent traps and marketing red flags
These are not small details. They are often where patients lose choice, time to reflect, or realistic expectations.
Consent traps
- Skipping the check for an underlying cause before treating the symptom.
- Not explaining that most treatments reduce rather than stop sweating and need repeating.
- Underplaying the chance, severity and permanence of compensatory sweating before surgery.
- Not mentioning temporary muscle weakness when injecting the hands.
- No clear plan or cost for repeat treatments.
Marketing red flags
- Promising a permanent cure for sweating with no downsides.
- Pushing surgery without a full discussion of compensatory sweating.
- Offering injections or devices without first checking for an underlying cause.
- Claiming a single treatment works for everyone and every site.
- Not being clear that injection effects wear off and need repeating.
Choosing a specialist safely
- Check the specialist is on the GMC Specialist Register for this area.
- Make sure they work at a CQC-registered service, and look for membership of the relevant Royal College or professional body.
- You're entitled to time to consider and to have your questions answered before you agree — the specialist who looks after you should explain it, not a salesperson.
- Be wary of pressure: time-limited offers or deposits taken before you've had time to think are red flags, not bargains.
- You're entitled to your total cost in writing — including any follow-up — before you decide.
Questions to ask your medical professional
Take this to your consultation. A good specialist will welcome every one of these.
- Could my sweating have an underlying cause that should be checked first?
- Which treatment do you suggest starting with, and why?
- How long will the effect last, and how often would I need to repeat it?
- If I consider botulinum toxin, how many injections and how much relief is realistic?
- If surgery is raised, how likely is compensatory sweating and how bad can it be?
- Which of these options are available on the NHS and which would be private?
- Are you on the GMC Specialist Register for this area, and which Royal College or professional body are you a member of?
- Will you be the specialist who carries out my treatment, and who looks after me afterwards?
- What are the risks for someone like me, and how often do your own patients have a problem or need it repeated or redone?
- What does a realistic result look like — and what can this treatment not achieve?
- What are my options, including waiting, doing nothing for now, or choosing a different approach?
- Can I have written information, results and aftercare instructions in a format I can use, including any accessibility or communication support I need?
- What is the total cost in writing, including any follow-ups, and how much time do I have to decide?
Frequently asked questions
When should excessive sweating be checked by a doctor?
Do these treatments cure sweating for good?
Is treatment available on the NHS?
How long does Botox for sweating last?
What is compensatory sweating after surgery?
Will antiperspirants for hyperhidrosis irritate my skin?
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How we made this page
Medically reviewed by a GMC-registered consultant. Written in plain English, checked against NHS, NICE, GMC and relevant Royal College / specialist-society guidance, and kept under review. No clinic paid to appear on this page, and we publish no pricing. This is general information to help you prepare — it is not a substitute for advice from your own clinician. How we review our guides →
Source hierarchy: UK regulator and NHS/NICE guidance first, then relevant Royal College or specialist-society guidance, then peer-reviewed evidence for procedure-specific figures where available.
Sources & standards: NHS — Excessive sweating (hyperhidrosis) British Association of Dermatologists — Hyperhidrosis (patient information) NHS Scotland Right Decisions — Hyperhidrosis pathway Endoscopic thoracic sympathectomy: technique and results — PMC Long-term compensatory sweating after sympathectomy — PMC
Reviews reflect patients' experience of care, not clinical outcomes. For procedure volumes and outcome data see PHIN.
Last medically reviewed 2026-09-21. Spotted something wrong or out of date? Report an error in this guide.
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