Hyperhidrosis Treatment — Beyond Just Sweating

Last updated: 5 March 2026

Hyperhidrosis — excessive sweating that goes beyond the body’s thermoregulatory needs — affects approximately 3% of the UK population, yet it remains significantly underdiagnosed and undertreated. Far more than a cosmetic inconvenience, hyperhidrosis can profoundly impact quality of life, affecting professional confidence, social interactions, and emotional wellbeing. Modern aesthetic medicine offers highly effective treatments that can transform the lives of those affected.

Understanding Hyperhidrosis

The human body has approximately 2-4 million eccrine sweat glands, concentrated in the palms, soles, axillae (underarms), and forehead. In hyperhidrosis, these glands produce sweat far in excess of what is needed for temperature regulation.

Research published in the British Journal of Dermatology classifies hyperhidrosis into two types:

Primary Focal Hyperhidrosis

The most common form, affecting specific body areas (underarms, palms, soles, face) without an identifiable underlying cause. It typically begins in adolescence, has a genetic component (30-50% of patients report a family history), and is characterised by symmetrical sweating that occurs during waking hours.

Secondary Generalised Hyperhidrosis

Caused by an underlying medical condition (thyroid disorders, diabetes, menopause, infections) or medication side effects. It tends to affect larger body areas, may occur during sleep, and requires investigation of the underlying cause.

The Impact Beyond Sweating

A 2020 quality-of-life study in Dermatology found that hyperhidrosis patients reported:

• 73% experienced significant emotional distress
• 68% reported impaired social confidence
• 56% felt their professional life was negatively affected
• 45% experienced anxiety specifically related to sweating
• 34% reported depressive symptoms linked to their condition

Dr Sophie Cartwright, consultant dermatologist specialising in hyperhidrosis management, notes: “The psychological burden of hyperhidrosis is often underestimated. Many patients have suffered in silence for years, unaware that highly effective treatments exist.”

Treatment Options

1. Clinical-Strength Antiperspirants

Aluminium chloride hexahydrate (20-25%) preparations such as Driclor or Anhydrol Forte are the first-line treatment. Applied to dry skin at night, they work by forming a physical plug in the sweat duct. Effectiveness ranges from 30-65% sweat reduction, though skin irritation can be a limiting factor.

2. Botulinum Toxin Injections

The most effective non-surgical treatment for focal hyperhidrosis. Botulinum toxin blocks the release of acetylcholine at the nerve-sweat gland junction, temporarily halting sweat production in the treated area.

• Efficacy: 82-87% sweat reduction (confirmed by gravimetric testing)
• Duration: 4-12 months per treatment (average 7-8 months for axillary hyperhidrosis)
• Treatment areas: Underarms, palms, soles, forehead, scalp
• Procedure time: 20-30 minutes
• NICE approved: Recommended as a treatment option when topical treatments have failed

3. Iontophoresis

A device-based treatment that passes a mild electrical current through water-soaked skin, disrupting sweat gland function. Primarily used for palmar and plantar hyperhidrosis, requiring regular sessions (initially 3-4 times per week, reducing to weekly maintenance).

4. Microwave Thermolysis (miraDry)

A newer technology that uses microwave energy to permanently destroy underarm sweat glands. A 2021 study in Lasers in Surgery and Medicine reported an average 82% sweat reduction maintained at 2-year follow-up.

5. Oral Medications

Anticholinergic medications (glycopyrrolate, oxybutynin) can reduce generalised sweating. However, systemic side effects (dry mouth, blurred vision, urinary retention) limit their use to moderate-severe cases.

Botulinum Toxin: The Treatment in Detail

Before Treatment

• Avoid using antiperspirant for 24 hours prior
• Shave underarms 2-3 days before (if treating axillae)
• An iodine-starch test may be performed to map the sweating area precisely

During Treatment

Multiple small injections of botulinum toxin are administered across the treatment area using a fine needle. For underarm treatment, approximately 50 units per side is typical. The procedure is well-tolerated, with ice or topical anaesthetic available for comfort.

After Treatment

Results begin within 2-4 days, with full effect at 2 weeks. Most patients describe the improvement as life-changing, particularly during the summer months and in professional settings.

Frequently Asked Questions

Is hyperhidrosis treatment available on the NHS?

Botulinum toxin for axillary hyperhidrosis is available on the NHS in some areas, though waiting lists can be long. NICE guidelines recommend it when topical treatments have failed. Private treatment offers faster access and more flexible scheduling.

Will blocking sweat in one area cause increased sweating elsewhere?

Compensatory sweating can occur but is relatively uncommon with botulinum toxin treatment (affecting approximately 5% of patients) and is usually mild. The body has millions of sweat glands, and treating a small area has minimal impact on overall thermoregulation.

How much does hyperhidrosis treatment cost?

Botulinum toxin treatment for axillary hyperhidrosis typically costs £400-£600 per session privately. Given that treatments last 7-8 months on average, this equates to approximately £1-£2 per day — a modest investment relative to the quality-of-life improvement.

Can hyperhidrosis be cured permanently?

Microwave thermolysis (miraDry) offers permanent reduction in underarm sweating. Botulinum toxin provides temporary but highly effective relief requiring maintenance treatments. Surgical options (endoscopic thoracic sympathectomy) offer permanent results but carry higher risks.