You change clothes several times a day. You avoid raising your arms in public. You refuse to shake hands because your palms are constantly wet. You cancel social or professional activities in anticipation of embarrassment.<\/p>\n
Hyperhidrosis - excessive sweating - is not a hygiene problem, nor a matter of ordinary heat or anxiety. It's a recognized medical condition that affects between 1 and 3 % of the Canadian population, including a significant proportion in Quebec, and can have a major impact on the quality of professional, social and emotional life.<\/p>\n
The good news: treatment options are multiple, effective and accessible. This guide covers the entire therapeutic spectrum available in Quebec in 2026 - from first-line topical treatments to last-resort surgical options - with actual information on efficacy, costs, RAMQ and insurance coverage, and clinical indications for each approach.<\/p>\n
The physiological mechanism<\/b><\/p>\n
Sweating is a normal thermoregulatory response - eccrine sweat glands, distributed over the entire body surface but concentrated in the armpits, palms, soles and face, produce sweat to cool the body. In hyperhidrosis, this mechanism is hyperactivated in disproportion to actual thermoregulatory needs - sweating occurs outside of any adequate thermal or emotional stimulus, in quantities far in excess of what the situation requires.<\/p>\n
The autonomic nervous system - specifically the cholinergic sympathetic fibers that innervate the sweat glands - is hyperactive in this condition. Medical treatments for hyperhidrosis target this mechanism at different levels of the physiological chain, which explains the diversity of approaches available.<\/p>\n
Primary vs. secondary hyperhidrosis - a clinically essential distinction<\/b><\/p>\n
Primary hyperhidrosis<\/strong> - also known as essential focal hyperhidrosis - is the most common form. It is idiopathic, meaning that it occurs without any identifiable underlying medical cause. It typically begins in childhood or adolescence, affects focal, symmetrical areas - armpits, palms, soles, face or scalp - and generally ceases during sleep. It is aggravated by stress and emotions, but also occurs at complete rest.<\/p>\n Primary hyperhidrosis is the form treated by medical aesthetic clinics and dermatologists - it is the indication for the treatments described in this guide.<\/p>\n Secondary hyperhidrosis<\/strong> is generalized excessive sweating caused by an underlying medical condition or medication. Medical causes include hyperthyroidism, poorly controlled diabetes, chronic infections, lymphomas and certain tumors, menopause and hormonal derangements, neurological diseases, and heart failure. Many drugs can induce secondary hyperhidrosis - antidepressants, including serotonin reuptake inhibitors and tricyclics, some antihypertensives, opioids, and others.<\/p>\n Secondary hyperhidrosis requires treatment of the underlying cause or medication adjustment. It is generalized rather than focal, may occur at night, and often begins in adulthood with no previous history. A full medical evaluation is essential before concluding that hyperhidrosis is primary - the doctor must ensure that he or she is not missing a treatable condition.<\/p>\n Affected areas and their relative frequency<\/b><\/p>\n Axillary hyperhidrosis - the armpits - is the most frequently affected area and the one that generates the most requests for treatment, due to its direct impact on clothing, appearance and social interactions. Palmar hyperhidrosis - the palms of the hands - is often the most professionally and socially disabling, making handshaking, handling objects and keyboard work uncomfortable. Plantar hyperhidrosis - the soles of the feet - is frequently associated with palmar hyperhidrosis and can cause secondary skin problems - maceration, fungal infections. Craniofacial hyperhidrosis - face, scalp, neck - is less frequent, but particularly disabling socially. Some patients have several affected areas simultaneously.<\/p>\n The impact on quality of life - a medically recognized reality<\/b><\/p>\n Hyperhidrosis is not a medical coquetry. Quality of life studies conducted on hyperhidrotic populations document a significant and measurable impact on self-esteem, social relationships, clothing and occupational choices, leisure activities, and mental health - with rates of social anxiety and depression significantly higher in this population than in the general population.<\/p>\n Recognition of this reality by the Quebec medical profession has progressed - hyperhidrosis is now a recognized therapeutic indication for several reimbursed treatments, and no longer a cosmetic problem to be minimized.<\/p>\n Diagnosis - how it's made<\/b><\/p>\n The diagnosis of primary hyperhidrosis is clinical - based on medical history, description of symptoms, physical examination, and exclusion of secondary causes. No specific laboratory tests are required to confirm the diagnosis, but basic tests - TSH, blood glucose, blood work - are usually ordered to rule out the most common underlying medical causes.<\/p>\n The iodized starch test - application of an iodine solution to the area, followed by a starch powder that turns blue-black in the presence of sweat - visualizes and documents the exact distribution of areas of active perspiration. This test is useful prior to Botox injections to guide the mapping of injection sites.<\/p>\n Severity can be assessed using the Hyperhidrosis Disease Severity Scale (HDSS) - a 1 to 4 scale based on the perceived impact of sweating on daily activities - which helps to document initial severity and monitor response to treatment.<\/p>\n Aluminium chloride - the universal first line<\/b><\/p>\n Aluminum chloride concentrate is the first-line topical treatment for mild to moderate primary hyperhidrosis. It acts by forming complexes that mechanically obstruct the ducts of eccrine sweat glands, reducing their ability to secrete sweat.<\/p>\n Over-the-counter formulations - Certain Dri, Drysol OTC, Degree Clinical - contain between 12 and 20 % of aluminum chloride. Prescription formulations - Drysol 20 % solution in anhydrous ethanol - are more concentrated and more effective for moderate to severe cases.<\/p>\n How to use :<\/strong> apply to perfectly dry skin - ideally after blow-drying - in the evening before bedtime, rinsing off in the morning. The initial frequency is daily until satisfactory control is achieved, then reduced to once to three times a week as required.<\/p>\n Efficiency :<\/strong> aluminum chloride is effective in 30 to 40 % patients with mild to moderate hyperhidrosis. In severe cases, its efficacy is limited - it reduces sweating without eliminating it, and long-term tolerance may be reduced.<\/p>\n Side effects:<\/strong> Skin irritation, pruritus and erythema are common, especially at the start of treatment and in areas of sensitive skin. Applying to dry skin and using a moisturizing cream in the morning helps reduce irritation.<\/p>\n RAMQ coverage :<\/strong> Prescription aluminum chloride (Drysol) is on the RAMQ list of reimbursed drugs for insured patients who meet the criteria. Check with your pharmacist for specific coverage.<\/p>\n Anticholinergic agents - a systemic option<\/b><\/p>\n Anticholinergic drugs inhibit cholinergic transmission in the sympathetic ganglia innervating the sweat glands - they reduce perspiration systemically, affecting all areas simultaneously.<\/p>\n L\u2019oxibutynin<\/strong> (Ditropan) is the most widely used anticholinergic for hyperhidrosis in Quebec. At doses of 2.5 to 7.5 mg per day, it significantly reduces excessive sweating in a substantial proportion of patients. Randomized studies confirm its superior efficacy to placebo in primary generalized and palmar hyperhidrosis.<\/p>\n Visit glycopyrrolate<\/strong> - less available in a standard oral formulation in Canada, but prescribed in certain cases - is sometimes preferred for its slightly different side-effect profile.<\/p>\n Side effects of anticholinergics :<\/strong> dry mouth (very frequent, often the limiting factor), constipation, urinary retention, blurred vision, tachycardia, and cognitive impairment at high doses in elderly patients. Dry mouth can be particularly debilitating - some patients prefer to tolerate perspiration rather than have a constantly dry mouth.<\/p>\n Contraindications:<\/strong> angle-closure glaucoma, urinary retention, gastrointestinal obstruction, myasthenia gravis.<\/p>\n RAMQ coverage :<\/strong> Oxibutynin is listed on the RAMQ for approved indications. Coverage for hyperhidrosis depends on the formulation prescribed and specific criteria - your pharmacist can confirm the coverage applicable to your prescription.<\/p>\n New topical options - glycopyrronium tosylate<\/b><\/p>\n Qbrexza is a medicated wipe impregnated with glycopyrronium tosylate, an anticholinergic applied topically to the armpits, approved by Health Canada for axillary hyperhidrosis. It offers the advantage of local action with fewer systemic effects than oral anticholinergics - but is significantly more expensive and insurance coverage is variable.<\/p>\n Botox therapy for hyperhidrosis is the option that best combines efficacy, duration of action and safety profile - for patients who don't respond sufficiently to topical treatments or who want more reliable, longer-lasting control.<\/p>\n The mechanism of action<\/b><\/p>\n Botulinum toxin type A blocks the release of acetylcholine at the neuroeffector junctions of the cholinergic sympathetic fibers that innervate the eccrine sweat glands. The result is a functional, reversible interruption of sweat gland stimulation in the injected area - without gland destruction, scarring or permanent modification.<\/p>\n This mechanism of action is independent of that which produces muscle relaxation in cosmetic application - both effects use the same molecule, but in different target tissues and at different injection depths.<\/p>\n The procedure - what happens in practice<\/b><\/p>\n Axillary hyperhidrosis<\/strong> is the area for which the protocol is the most standardized and results the best documented. The session begins with an iodized starch test to precisely delineate areas of active perspiration - this mapping guides the placement of injections and maximizes treatment efficacy. Multiple injections are performed in a grid pattern in the axillary area, typically at 1-2 cm intervals, using a fine needle. Each axilla receives between 50 and 100 units of botulinum toxin, depending on the protocol and the documented active area. The procedure generally takes 20 to 30 minutes in total. Pain is moderate - a topical anesthetic cream (EMLA) can be applied 30 to 45 minutes before the injections to improve comfort.<\/p>\n Palms<\/strong> require a slightly different technique and a greater volume of anesthetic, as the palms are particularly sensitive. Nerve blocks - injections of local anesthetic into the median and ulnar nerves - are generally required to make the procedure comfortable. Injections are performed in a tight grid over the entire active palmar surface. The volume of toxin used is higher than for underarms - 100 to 150 units per hand, depending on the area to be treated.<\/p>\n The soles of the feet<\/strong> follows a similar protocol for palms, with prior local anaesthesia required.<\/p>\n Efficacy and duration of action<\/b><\/p>\n The efficacy of Botox for axillary hyperhidrosis is among the best documented of all therapeutic applications of botulinum toxin. Clinical studies report a reduction in sweating of 80 to 90 %<\/strong>in the treated areas in over 90 % of patients treated. Results are visible within 5 to 7 days of injections, and peak at two weeks.<\/p>\n The duration of action for hyperhidrosis is generally longer<\/strong> than for cosmetic applications - between 6 and 12 months<\/strong> for axillary hyperhidrosis in the majority of patients, with an average of around 7 to 8 months depending on the study. Some patients report effects persisting beyond 12 months. The duration is generally shorter for palms and soles (4 to 6 months), due to the higher glandular density and mechanical constraints in these areas.<\/p>\n With repeated treatments, some patients report a progressively longer duration of action - an adaptation phenomenon not universally observed, but documented in series of patients followed over several years.<\/p>\n Treatment costs<\/b><\/p>\n The cost of Botox treatment for axillary hyperhidrosis in Quebec in a medical clinic is generally between 700 $ and 1,200 $<\/strong> for both armpits, depending on location, region and number of units used. Treatment of the palms or feet is often priced in a similar or slightly higher range, due to the anesthetic technique and volume of product required.<\/p>\n Clinique Omicron's specific rates for Botox therapy are available at cliniqueomicron.ca.<\/p>\n Private insurance coverage<\/b><\/p>\n This is an important point that many patients are unaware of: many group and individual insurance plans in Quebec cover partially or totally<\/strong> therapeutic Botox for severe primary hyperhidrosis, on condition that a medical prescription documents the therapeutic indication - as opposed to cosmetic.<\/p>\n Coverage varies significantly depending on the plan - some reimburse the product (botulinum toxin), others the complete treatment including medical fees, still others limit reimbursement to a lump sum per year. Before your treatment, contact your insurer to check your specific coverage and ask your doctor for a detailed medical receipt indicating the diagnosis of primary hyperhidrosis - this document is required for reimbursement.<\/p>\n The RAMQ does not cover Botox treatment for hyperhidrosis in the vast majority of cases, but the medical prescription of botulinum toxin may be covered through certain programs under specific conditions - your doctor can assess eligibility for your situation.<\/p>\n Iontophoresis is a physical treatment particularly suited to palmar and plantar hyperhidrosis - the two areas where it is most validated by clinical data, and the most difficult to treat with Botox over the long term due to the cost and repetition of painful injections.<\/p>\n How it works<\/b><\/p>\n Iontophoresis uses a low-intensity electric current - continuous or pulsed, depending on the device - to deliver charged ions into the skin via a bath of tap water in which the hands or feet are immersed. The exact mechanism by which this process reduces perspiration is not fully elucidated - several hypotheses coexist, including a change in the pH of the skin around the sweat gland ducts, a temporary interruption in nerve transmission, and keratinization of the excretory duct. In clinical practice, efficacy is well documented regardless of full mechanistic understanding.<\/p>\n Iontophoresis devices consist of two tanks of water in which the hands - or feet - are immersed at the same time, connected to a current generator. A typical session lasts 20 to 30 minutes. The sensation is a slight electric tingling - generally well tolerated, but uncomfortable for some patients at high intensities.<\/p>\n Effectiveness and frequency of sessions<\/b><\/p>\n The efficacy of iontophoresis for palmar hyperhidrosis is well established - studies report a reduction in sweating of 80 to 90 % in responders, a figure comparable to Botox. The proportion of patients who respond favorably is estimated at between 70 and 85 %, depending on the series.<\/p>\n The main limitation of iontophoresis is the required frequency of sessions, particularly in the induction phase. To obtain an initial effect, the majority of patients require 3 to 4 sessions per week for 3 to 4 weeks<\/strong> - i.e. between ten and fifteen initial sessions. Once control has been achieved, a maintenance session every one to two weeks is generally sufficient to maintain the result. If the treatment is interrupted, perspiration returns within a few weeks.<\/p>\n This weekly maintenance rhythm is what fundamentally differentiates iontophoresis from Botox - iontophoresis is effective but requires a regular long-term investment of time, whereas Botox offers 6 to 12 months of efficacy for a single session.<\/p>\n Home appliances - a viable option<\/b><\/p>\n Personal iontophoresis devices are available in Canada and represent an economically attractive long-term option for patients who respond well to treatment and are willing to maintain the frequency of home sessions.<\/p>\n Brands available in Canada include Fischer Galvanic (a clinical standard for decades), Dermadry - a Canadian brand with devices designed for hands, feet and underarms - and Hidrex, a well-established German brand. The cost of a personal device generally ranges from 400 $ to 900 $ CAD, depending on model and features.<\/p>\n Before investing in a home device, it is clinically advisable to carry out a few sessions in a medical environment or specialized clinic to confirm that you are a responder to treatment - inter-individual variability in response is real, and an investment of 700 $ in a personal device is premature without prior confirmation of response.<\/p>\n Standard tap water is generally sufficient. Adding sodium bicarbonate to the water may potentiate the effect in some patients who do not respond to water alone.<\/p>\n Contraindications to iontophoresis<\/b><\/p>\n Pregnancy is a contraindication. The presence of metal implants in the treated areas - joint prostheses, surgical screws, pacemakers - contraindicates treatment in the areas concerned. Open wounds, active dermatitis and active skin infections in the areas to be treated temporarily contraindicate treatment until resolved.<\/p>\n Endoscopic thoracic sympathectomy (ETS) is the surgical option available for severe hyperhidrosis refractory to conservative treatments. It is presented here for completeness of information - it is an option to be considered only after documented failure of medical treatments, for reasons that the clinical data make very clear.<\/p>\n Endoscopic thoracic sympathectomy is a minimally invasive surgery performed under general anesthesia. The surgeon introduces an endoscope into the thoracic cavity and sections or clips the ganglia of the thoracic sympathetic chain responsible for innervation of the sweat glands in the target areas - typically at the T2 level for palmar hyperhidrosis and T3-T4 for axillary hyperhidrosis.<\/p>\n The procedure can be performed as an outpatient or with an overnight hospital stay, and recovery time is generally a few days to two weeks. Effectiveness on hand perspiration is very high - over 95 % in most surgical series - and the effects are permanent.<\/p>\n Sympathectomy is considered for patients with severe palmar or axillary hyperhidrosis - HDSS of 3 or 4 - who have responded inadequately or unsustainably to first- and second-line treatments (aluminum chloride, anticholinergics, Botox, iontophoresis), and whose impact on quality of life is documented and significant.<\/p>\n Patient selection is rigorous - surgery is not for everyone, and pre-operative assessment includes a specialist surgical consultation, chest imaging, and a comprehensive discussion of risks and benefits.<\/p>\n Sympathectomy is an effective surgical procedure, but it comes with a risk whose frequency and impact amply justify considering it as a last resort: the compensatory sweating<\/strong>.<\/p>\n Compensatory sweating is hyperhidrosis that develops in untreated areas - typically the trunk, abdomen, thighs, back - in response to sympathectomy. It occurs in 50 to 90 % of operated patients<\/strong> depending on the series, with variable intensity. In a significant proportion of patients, this compensatory sweating is severe - sometimes more disabling than the original palmar or axillary hyperhidrosis that prompted surgery. It is permanent and cannot be treated surgically.<\/p>\n Other potential complications of sympathectomy include Horner's syndrome - palpebral ptosis, miosis and ipsilateral facial anhidrosis due to injury to cervical sympathetic fibers - which occurs in 1-2 % of cases, transient postoperative pneumothorax, intercostal chest pain, and rare general anesthetic complications.<\/p>\n This is why the vast majority of current medical guidelines position sympathectomy as an option of last resort, reserved for severe refractory cases with documented impact on quality of life, and only after the patient has been fully informed of the risk of compensatory sweating. Many patients who have undergone this surgery and developed severe compensatory sweating report that they would have preferred to maintain their original hyperhidrosis if they had fully understood this risk prior to surgery.<\/p>\n How can you tell the difference between normal sweating and hyperhidrosis requiring treatment?<\/strong><\/p>\n The distinction is mainly clinical and qualitative. Normal sweating occurs in response to heat, physical exertion or intense emotional stress, and ceases once the stimulus has disappeared. Primary hyperhidrosis is characterized by sweating that occurs independently of heat or effort, ceases during sleep, affects focal and symmetrical areas, and has a measurable impact on daily activities. If you recognize yourself in this description, and sweating is affecting your professional or social life, a medical consultation is warranted. The HDSS scale - a simple question about the impact of sweating on your activities - is a quick tool your doctor can use to objectivize severity.<\/p>\n Is Botox for hyperhidrosis covered at Clinique Omicron?<\/strong><\/p>\n Medical consultations at Clinique Omicron are private, fee-based services - the consultation itself is not covered by the RAMQ. However, many private insurers cover Botox treatment for severe primary hyperhidrosis upon presentation of a medical prescription documenting the therapeutic indication. We provide a detailed medical receipt after each treatment to facilitate your insurance claim. Consult our price list at cliniqueomicron.ca and check your coverage with your insurer before your appointment.<\/p>\n Does hyperhidrosis return after Botox?<\/strong><\/p>\n Yes - the effect of Botox is temporary and reversible. Perspiration gradually returns as the sympathetic nerve endings recover their function, usually between 6 and 12 months after treatment. A further injection at this time restores control. Patients undergoing regular treatment for several years often report a progressively longer duration of action, which may reduce the frequency of sessions required over time.<\/p>\n Can I use iontophoresis if I have jewelry or piercings on my hands?<\/strong><\/p>\n Metal jewelry and piercings should be removed from immersed areas during the iontophoresis session - they concentrate the electric current and can cause local burns. Non-removable jewelry, such as some healed piercings, can be protected with a small amount of Vaseline. Permanent metal implants - joint prostheses, surgical screws - are a contraindication in the areas concerned, and must be reported to the doctor or technician before any session.<\/p>\n Can hyperhidrosis return after sympathectomy?<\/strong><\/p>\n The effect of sympathectomy on the targeted areas is permanent, and the return of hyperhidrosis in these areas is very rare. On the other hand, compensatory sweating - in other areas of the body - is a frequent and irreversible consequence of surgery. This is the main limitation of this option, and the reason why non-surgical medical treatments must be exhausted before considering it.<\/p>\n <\/p>\n Aesthetic medicine - Medical aesthetic care | Clinique Omicron<\/a><\/p><\/blockquote>\nTopical and medicinal treatments<\/h3>\n
Botox for hyperhidrosis - the most effective treatment<\/h3>\n
Iontophoresis - for hands and feet<\/h3>\n
Surgery as a last resort<\/h3>\n
The procedure<\/h3>\n
For whom?<\/h3>\n
The risks - what justifies the medical reserve<\/h3>\n
Frequently asked questions<\/h3>\n