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Evidence-Based — Combined with 20+ Years of Experience
Dr. Irshad’s TakeHyperhidrosis Surgery
K IrshadMD
Who benefits
Early-onset sweating of the palms, underarms or feet.
The operation
Keyhole ETS, two 5 mm cuts — day surgery, home in ~1 hour, results felt immediately.
Nerve levels
R3–R4 for palms, R4–R5 for underarms.
What matters most
Careful patient selection — the biggest factor in a lasting result.
Main trade-off
Compensatory sweating — fewer, lower levels help limit it.
Clipping vs. cutting
Clipping isn’t a reliable “undo” — the right patient matters more.
Who is a good candidate
Focal pattern of sweating
Heavy sweating confined to the palms, underarms and/or feet, while the rest of the body sweats normally. This focal pattern is the hallmark of primary hyperhidrosis and is exactly what ETS is built to treat — it tells me the overactive signal is coming from a defined part of the sympathetic chain I can target precisely.
Early onset
Sweating that started young — often in childhood or the teenage years — and frequently shared by a parent or sibling. Early, lifelong, familial sweating is the profile most consistent with primary focal hyperhidrosis,9 and in my experience these are the patients who get the most reliable and durable results.
Meaningful impact on life
The sweating genuinely interferes with work, daily activities, confidence or relationships — hands that drip and smudge paper, damage electronics, or make a simple handshake stressful.6 Because ETS is a permanent step, I reserve it for sweating that truly affects quality of life, not milder or occasional dampness.
Non-surgical options tried
Prescription-strength antiperspirants, iontophoresis, Botox and/or medication have been tried without lasting relief. Surgery sits at the end of that ladder: these measures help many people and are worth exhausting first, but their effect is temporary — even effective options such as Botox must be repeated — and the sweating is often refractory to them over time.10
Selection principles informed by published surgical consensus and diagnostic criteria.1,3,9
Who is not a good candidate
Night-time (nocturnal) sweating
Primary focal hyperhidrosis almost always quiets during sleep, so waking drenched instead points to a generalized or secondary cause — thyroid, hormonal, infection or medication. Surgery won’t fix that, so I investigate the underlying cause first rather than operate.
Facial / cranial-only sweating
Isolated facial sweating or blushing responds less predictably to ETS and carries a higher chance of noticeable compensatory sweating. In my experience these patients are less consistently satisfied, so I counsel them carefully and often steer away from surgery.
Whole-body or truncal sweating
If you already sweat heavily across the stomach and back, interrupting the chain tends to drive even more sweating to those areas — the compensatory effect lands on top of an already-heavy baseline. That combination frequently disappoints, so I’m cautious about operating.
Late-life or perimenopausal onset
Sweating that first appears in mid-life or around perimenopause is usually not primary focal disease — it is more often hormonal or generalized. It responds less predictably to surgery, and the potential side effects can outweigh the benefit, so this is rarely a surgical problem.
BMI over 30
A higher body-mass index is associated with less reliable results and more compensatory sweating in my practice. It isn’t an absolute barrier, but it is an important part of an honest conversation about what surgery can realistically deliver.
Poorly controlled thyroid disease
An overactive thyroid can drive sweating all over the body and closely mimic hyperhidrosis. It is simple to check with blood work and to treat — and doing so first sometimes resolves the sweating with no surgery at all.
Unmanaged anxiety, depression, PTSD or ADHD
Anxiety, depression, PTSD or ADHD that isn’t well managed can amplify how sweating is experienced and how the recovery period — with its temporary phantom and burst sweating — is tolerated. Stabilizing these first leads to better outcomes and higher satisfaction.
Surgical technique & nerve levels
Palms (palmar)R3–R4
I cauterize and divide the sympathetic nerve on top of the rib. Where reasonable I favour a single, lower level (R4) rather than clearing both R3 and R4, because fewer and lower interruptions are linked to less compensatory sweating while still delivering dry hands. We choose the exact level together at your consultation, balancing dryness against side-effect risk.1,2,7
Underarms (axillary)R4–R5
For underarm sweating I work lower on the chain, at R4–R5, treating the nerve directly on the rib rather than in the interspace. Staying on the rib keeps the anatomy predictable and the result reproducible, and working at lower levels helps limit compensatory sweating.1
Nerve of Kuntz~R2–R3
The nerve of Kuntz is an aberrant accessory branch, often crossing near the 2nd–3rd rib, that can carry sweat signals around a standard sympathectomy. I deliberately look for and interrupt it — missing it is one of the most common reasons sweating persists or returns, so this step protects the durability of your result.4
On the dayDay surgery
The whole procedure is done as day surgery. I freeze the area with long-acting local anaesthetic for comfort, fully re-expand the lung and evacuate the air so no chest tube is needed. Most patients are up and home within about an hour, and the hands are dry immediately.1,5
Side effects & what to expect
Compensatory sweating
The body may ramp up sweating elsewhere — commonly the back, chest, abdomen or thighs — to compensate for the newly dry areas. It fluctuates with heat and stress and is the single most important trade-off to understand. Its likelihood and severity relate to how many levels are treated, which is why I favour fewer, lower levels and careful patient selection.2,7
Phantom sweating
Many patients feel the old, familiar tingle that sweating is about to start — but it never actually comes. It is simply the nervous system adjusting to the change, it is harmless, and it typically fades over a few months as you get used to genuinely dry hands.
Early sweat bursts
In the first three to four months some patients get short, unexpected bursts of sweating that can last a few hours, occasionally up to a day. They can be alarming, but they are common and expected, and almost always settle on their own — I make a point of reassuring patients not to read them as failure.
Gustatory sweating
A small number of people notice a little sweat on the upper lip or forehead when eating hot or spicy food. It is usually mild, manageable, and uncommon overall.
Lower resting heart rate
Because the sympathetic chain also influences heart rate, some people see their resting rate ease by roughly one or two beats per minute. It is rarely of any consequence — most only notice because a fitness tracker shows they can’t quite hit their old peak heart rate.
Post-thoracoscopy discomfort
Some soreness of the chest wall where the small ports were placed is normal and usually settles within four to six weeks with simple pain relief. For most people it doesn’t limit day-to-day activity.
Horner’s syndrome
Very rarely, injury near the top of the chain (the stellate ganglion) can cause a droopy eyelid and a smaller pupil on one side — Horner’s syndrome. It is exceptionally uncommon with the levels and technique I use, and I take specific care to stay below that region.
In my words
Why this works for focal hyperhidrosis
Primary focal hyperhidrosis — heavy, localized sweating of the palms, underarms or feet that usually starts young and can run in families — is driven by over-active signalling along the sympathetic nerve chain in the chest. Non-surgical treatments can help, but they are temporary and the sweating is often refractory to them over time. ETS interrupts that signal at its source, which is why the result is immediate and, for the right patient, long-lasting.5 In short, it treats the cause rather than the symptom — the reason a carefully chosen patient sees an improvement that is both instant and durable.
Clipping vs. cutting the nerve: my view
Patients often ask whether the nerve can be clipped rather than divided. Clipping places a small titanium clip across the chain (R3 for palmar, R4 for axillary), sometimes offered on the premise it can be removed if side effects prove troublesome. In my experience that reversibility is largely theoretical — once a clip has been in place three to four months I regard the effect as essentially permanent — the nerve undergoes irreversible (Wallerian) degeneration.8 Presenting clipping as an easy “undo” can create a false sense of security and weaken the careful patient selection that matters most. My philosophy is the reverse: choose the right patient so carefully that reversal is never wanted. Clipping remains reasonable for some patients, but only with very close follow-up and readiness to remove the clips within weeks, not months.
The evidence, briefly
94–100%
immediate resolution of sweating after ETS
STS 2011 · Martínez-Hernández 20241,5
4.4% vs 21.4%
compensatory sweating: staged / fewer-level vs one-stage bilateral
Menna et al., 20162
<25 yrs
typical onset age in the patients who do best
STS 2011 · Hornberger 20041,3
This describes my general approach and the current evidence; it is not a promise of a specific outcome. Every patient is different, and the right plan — including whether surgery is appropriate at all — is decided together at a personal consultation.
References
- Cerfolio RJ, De Campos JRM, Bryant AS, et al. The Society of Thoracic Surgeons Expert Consensus for the Surgical Treatment of Hyperhidrosis. Ann Thorac Surg. 2011;91(5):1642–1648.
- Menna C, Ibrahim M, Andreetti C, et al. Long-term compensatory sweating results after sympathectomy for palmar and axillary hyperhidrosis. Ann Cardiothorac Surg. 2016;5(1):26–32.
- Hornberger J, Grimes K, Naumann M, et al. Recognition, diagnosis, and treatment of primary focal hyperhidrosis. J Am Acad Dermatol. 2004;51(2):274–286.
- Ramsaroop L, Partab P, Singh B, Satyapal KS. Thoracic origin of a sympathetic supply to the upper limb: the ‘nerve of Kuntz’ revisited. J Anat. 2001;199(Pt 6):675–682.
- Martínez-Hernández NJ, Estors-Guerrero M, Galbis-Caravajal JM, et al. Endoscopic thoracic sympathectomy for primary hyperhidrosis: an over a decade-long follow-up on efficacy, impact, and patient satisfaction. J Thorac Dis. 2024;16(12):8292–8299.
- Henning MAS, Barati F, Jemec GBE. Quality of life in individuals with primary hyperhidrosis: a systematic review and meta-analysis. Clin Auton Res. 2023;33(5):519–528.
- Lee SS, Lee YU, Lee JH, Lee JC. Comparison of the long-term results of R3 and R4 sympathicotomy for palmar hyperhidrosis. Korean J Thorac Cardiovasc Surg. 2017;50(3):197–201.
- Loscertales J, Congregado M, Jimenez-Merchán R, et al. Sympathetic chain clipping for hyperhidrosis is not a reversible procedure. Surg Endosc. 2012;26(5):1258–1263.
- Hamm H, Naumann MK, Kowalski JW, Kütt S, Kozma C, Teale C. Primary focal hyperhidrosis: disease characteristics and functional impairment. Dermatology. 2006;212(4):343–353.
- Naumann M, Lowe NJ. Botulinum toxin type A in treatment of bilateral primary axillary hyperhidrosis: randomised, parallel group, double blind, placebo controlled trial. BMJ. 2001;323(7313):596.
Common questions
Who is a good candidate for hyperhidrosis (ETS) surgery?
In Dr. Irshad's approach, the best candidates have focal primary hyperhidrosis — heavy sweating confined mainly to the palms (and in selected cases the underarms), with normal sweating elsewhere. It typically started early in life and has not responded to non-surgical measures such as prescription antiperspirants, iontophoresis, or Botox. A thorough assessment is done before any surgery is recommended.
Who is not a good candidate for ETS?
Dr. Irshad considers ETS less suitable for people with night-time (nocturnal) sweating, total-body (generalized) sweating, sweating of the head and face only, an overactive thyroid, a high BMI, medication-induced sweating, or poorly managed anxiety or mood conditions. These features are associated with a higher chance of a disappointing result, so other options are usually discussed first.
Which nerve levels does Dr. Irshad target for palmar versus underarm sweating?
Dr. Irshad matches the level of the thoracic sympathetic chain to the symptom: for sweaty palms he typically works at the R3–R4 level, and for underarm sweating at the R4–R5 level. The work is done over the rib rather than in the interspace, and attention is paid to accessory fibres such as the nerve of Kuntz, which is a recognized cause of recurrence.
What are the possible side effects of ETS?
The most common is compensatory sweating, where the body redirects sweating to areas such as the trunk, back or thighs; this varies with heat and stress and is bothersome in only a minority. Other recognized effects include gustatory (food-related) sweating, a temporary phase of sweat bursts in the first few months, a small drop in resting heart rate, and — very rarely — Horner syndrome. Dr. Irshad reviews these in detail before surgery.
Can ETS be reversed — and is clipping reversible?
Cutting or cauterizing the nerve is permanent. Clipping is sometimes described as reversible, but in Dr. Irshad's view any window for meaningful reversal is measured in weeks, not months — by roughly three to four months the effect should be regarded as permanent. He emphasizes careful patient selection so that reversal is not something a patient later wishes for; where clipping is used, it is done with tight, early follow-up.
Is ETS a day surgery, and how quickly are results seen?
ETS is performed as day surgery through two small (about 5 mm) incisions on each side, generally without a chest tube, and most patients go home within about an hour of recovery. For sweaty palms the result is typically immediate — dry hands in the recovery room.