Excessive sweating treatment in Busan Seomyeon, and what each option actually does.

This is the treatment patients here are least ambivalent about, because the motivation is functional rather than cosmetic. It is also the one people delay longest, often having managed around it for years without knowing it is straightforwardly treatable.

Step one — topical antiperspirants

Aluminium-based prescription antiperspirants block the sweat duct mechanically and are the reasonable first step for mild to moderate underarm sweating. They work for a proportion of patients and irritate a substantial minority, producing the raw, itchy skin many people describe. They do very little for palms and soles, where the skin is too thick for meaningful penetration.

Step two — botulinum toxin

Blocks the nerve signal to the sweat glands in the treated area, stopping production rather than blocking the duct. Underarm treatment produces six to eight months of dryness from one session, which is the longest-lasting effect of any botox area. Palms and soles respond equally well and last four to six months, since the tissue is more active.

Why do underarms last so much longer?

Because eccrine glands regenerate their nerve supply slowly and the underarm area is relatively protected from mechanical stress. Palms and soles are in constant use and turn over faster. That is why an underarm patient often treats once or twice a year while a palm patient treats two to three times — a difference worth planning around rather than discovering.

What is involved for palms?

A nerve block, because palms are among the most sensitive areas on the body and topical cream does not reach adequately. Local anaesthetic placed at the wrist numbs the whole hand, which makes the treatment comfortable and adds about thirty minutes to the appointment. The block wears off over several hours, so fine hand control is reduced for the rest of the day — worth planning around — see numbing and anaesthesia.

Why do people wait so long to treat this?

Because it rarely feels like a medical problem. Patients describe fifteen or twenty years of choosing dark shirts, carrying spares, avoiding handshakes and declining situations where their hands would be noticed — an accumulation of small adjustments that never quite reaches the threshold of booking an appointment. It is also not widely known that a straightforward treatment exists, since botox is marketed almost entirely as cosmetic. Of everything offered here, this is the treatment where the gap between how much it improves daily life and how little it is discussed is widest.

How does this compare with other functional treatment?

It sits alongside masseter treatment for grinding and trapezius treatment for shoulder tension as the three cases where the same molecule is used for a problem rather than an appearance. All three have unusually high satisfaction rates for the same reason — the patient can tell whether it worked without looking in a mirror. Patients who arrive for one of the three frequently ask about the others once they realise the same mechanism applies, and combining them in one visit is straightforward since the areas do not interact.

Step three — oral medication

Anticholinergics reduce sweating systemically and are prescribed where the problem is generalised rather than localised. They work, and the side effects — dry mouth, blurred vision, constipation — mean many patients stop. They are a reasonable option for widespread sweating that no localised treatment can reach, and a poor first choice for a problem confined to two areas.

Step four — surgery

Endoscopic thoracic sympathectomy cuts the sympathetic nerve chain and permanently stops sweating in the treated distribution. It works, and the recognised complication is compensatory sweating elsewhere on the body, which a significant proportion of patients find worse than the original problem. It is the last rung for a reason, and patients who have not tried botulinum toxin should generally do so before considering it.

Does treatment cause sweating elsewhere?

Not with botulinum toxin, which is one of its advantages over surgery. Only the treated glands are affected and the body does not compensate by redirecting sweat to other areas. Compensatory sweating is a specifically surgical complication arising from cutting the nerve chain rather than from blocking glands locally.

Is it harmful to stop sweating in one area?

No. The underarms and palms account for a very small proportion of total sweat production and the body regulates temperature perfectly well without them. Patients occasionally worry that suppressed sweat is being trapped or redirected internally, which is not what happens — the glands simply do not produce.

What should a first consultation cover?

Which areas are affected and how severely, what has already been tried, whether sweating is generalised or localised, and whether it began suddenly — sudden onset in adulthood occasionally has a medical cause worth investigating rather than treating cosmetically. Where the picture is straightforward primary hyperhidrosis, treatment is same-day — see same-day treatment.