Oral glycopyrrolate after the failure of oral oxybutynin in the treatment of primary hyperhidrosis

THE PHARMACOLOGICAL TREATMENT AND MANAGEMENT OF HYPERHIDROSIS

INTRODUCTION

Idiopathichyperhidrosis is a dysfunctional disorder involving eccrine sweat glands and its impact on patients' daily quality of life is well-known. Unlike some years ago, when only poor effective and safe therapeutic alternatives were available, nowadays, several emerging pharmacological active substances have gained significant space as treatment options.

AREAS COVERED

The authors report on, in this narrative review, the emerging data from the literature focusing on the pharmacological treatments to draw up a drug treatments flow-chart for patients with idiopathic hyperhidrosis, taking into consideration specific differences among axillary, palmoplantar and craniofacial hyperhidrosis.

EXPERT OPINION

Idiopathic hyperhidrosis, regardless of the site of involvement, remains a functional disorder that places a significant burden on patients. After balancing efficacy against adverse events, systemic therapy, although off-label for all forms of hyperhidrosis can represent an additive therapeutic option for patients with insufficient response to topical treatment according to a step wise therapeutic approach. Until the pathophysiological mechanisms underlying hyperhidrosis are clear, and the etiological therapeutic approach become realistic, the greatest challenge in the therapeutic management of hyperhidrotic patients seems to be the search for the most convenient combination between different therapeutic modalities (topical and systemic agents, and botulinum toxins) to achieve long-term control of the disease symptoms.

Adjusting oral glycopyrrolate medication for hyperhidrosis to reflect seasonal temperature variations

The condition of most patients with hyperhidrosis (HH) is known to worsen with increased temperature. However, most prior studies of oral glycopyrrolate (OGly) for the treatment of HH have assumed a stable treatment protocol, without taking into account seasonal variations in temperature. The main aim of this study is to evaluate the outcomes derived from performing a seasonal adjustment of the dose of OGly for patients with HH. A prospective study of patients who began OGly for HH, and maintained treatment for at least 1 year, was performed. All patients had experienced treatment failure with oral oxybutynin. All were recommended to vary the dose of medication according to the time of year. Of the 35 patients included in the study, 20 (57.14%) varied the dose. Those with palmar and plantar HH had a greater propensity to do so. The patients who varied the dose according to the time of year were significantly more likely to report an "Excellent" response after 12 months of treatment. The frequency of adverse effects was 71.4% with no significant differences among the study groups. However, there was a significantly higher proportion of adverse effects other than oral xerosis in the group that did not vary the dose.

Survival study of treatment adherence by patients given oral glycopyrrolate for hyperhidrosis following treatment failure with oral oxybutynin

Oral anticholinergics such as oxybutynin (OOx) and glycopyrrolate (OGly) are frequently used in the management of hyperhidrosis. Although OOx is considered currently the anticholinergic drug of first choice, OGly is a safe and effective alternative if OOx fails. The aim of this study was to identify the main variables associated with treatment adherence by patients receiving OGly, for whom previous treatment with OOx had failed. A prospective study was conducted of patients with hyperhidrosis receiving treatment with OGly in the period 2012 to 2019. Epidemiological variables, treatment details, effectiveness and adverse effects were recorded. A total of 58 patients (41 women), with a mean age of 35.9 years, were included in the study. The median follow-up period was 32 months. At 3 months, 70.7% of the patients had responded to treatment (excellent response: 75.6%), and adverse effects were reported by 70.7%. At 12 months, 53.4% had responded (excellent response: 74.2%), with adverse effects in 70.9%. The variables associated with poorer adherence were affected areas: palms of the hands, soles of the feet and armpits. The only variable associated with greater adherence was the generalized presence of hyperhidrosis. Our results provide valuable insights into the outcomes achieved when OGly is used to treat hyperhidrosis.

Management Strategies Of Palmar Hyperhidrosis: Challenges And Solutions

Palmar hyperhidrosis is a potentially disabling condition for which management remains a therapeutic challenge. Given the significant impact on quality of life, various treatment options are available, ranging from topical agents and medical devices to systemic therapies and surgical interventions. Nonsurgical approaches, i.e. topical antiperspirants, botulinum toxin injections, iontophoresis, and systemic agents, are all supported by the current literature. Patients with mild-to-moderate disease can often benefit from topical therapies only. As disease severity progresses, systemic oral medication, such as anticholinergic drugs, usually becomes necessary. Last-line surgical approaches (sympathetic denervation) should be reserved for severe refractory cases. Recently, therapeutic strategies have been evolving with several new agents emerging as promising alternatives in clinical trials. In practice, however, each modality comes with its own benefits and risks. An individual therapeutic ladder is generally recommended, taking into account disease severity, benefit-to-risk profile, treatment cost, patient preference, and clinician expertise. This review will provide an update on current and emerging concepts of management for excessive hand sweating to help clinicians optimize therapeutic decision-making.

Safety of available and emerging drug therapies for hyperhidrosis

INTRODUCTION

Hyperhidrosis affects 4.8% of the U.S. population and has been underestimated by physicians for long time despite considerable interference with quality of life. Many patients suffer from primary (idiopathic) hyperhidrosis which results from over-activity of sympathetic nerves and is restricted to specific body areas, mostly the axillae, palms, soles, or head. Secondary hyperhidrosis is caused by an underlying disease or the intake of medications and often involves large parts of the body. Numerous effective therapies with topical or systemic drugs and surgical options are available. Areas covered: Efficacy and safety data on aluminum salts, anticholinergic drugs for topical or systemic application, and on intradermal botulinum toxin injections used to treat hyperhidrosis are critically evaluated, including data from clinical trials with focus on possible side effects and long-term complications in dispute. Expert opinion: Hyperhidrosis often responds well to available therapies. Depending on the type of hyperhidrosis treatment should be topical/local or systemic. Most of the side effects are mild, transient and easily manageable. In case of systemic treatment with anticholinergics low dosing and up-titration of medication is necessary to avoid severe adverse effects. Concerns about the promotion of breast cancer and Alzheimer disease by topical aluminum salts are unsolved.