Research
Palmar Hyperhidrosis (Sweaty Hands): Statistics and Impact
Palmar hyperhidrosis (excessive, hard-to-control sweating of the palms) is one of the most common and most disruptive forms of focal hyperhidrosis. In large population surveys it affects an estimated 5.33% of people in Japan and 4.59% of adolescents in one Chinese city, and it typically begins in childhood, with a mean onset around 11-12 years for palm-and-sole (palmoplantar) sweating. This page compiles the verified prevalence, age-of-onset, and impact figures for sweaty hands, with each number traced to its source. It is educational information, not a diagnosis or medical advice.
By the Sweat Explained Editorial Team · Published 2026-07-13 · Last reviewed 2026-07-13 · Educational information, not medical advice.
Key statistics at a glance
5.33%
prevalence of primary palmar hyperhidrosis in a Japanese survey of 5,807 people aged 5-64
Fujimoto 2013
4.59%
prevalence of primary palmar hyperhidrosis among ~13,000 students in Fuzhou, China
Tu 2007
11.5 years
mean age of onset for palmoplantar (hands-and-feet) hyperhidrosis
Walling 2009
45.2%
of primary hyperhidrosis patients had palm involvement in a US clinic series
Walling 2009
15.3%
of palmar hyperhidrosis cases reported a positive family history
Tu 2007
6.2%
of people with focal hyperhidrosis had visited a medical institution about it
Fujimoto 2013
How common are sweaty hands?
In a nationwide questionnaire study in Japan (5,807 valid responses, ages 5-64), primary palmar hyperhidrosis affected 5.33% of respondents. A separate survey of about 13,000 high-school and college students in Fuzhou, China, found primary palmar hyperhidrosis in 4.59% of participants. These two large East Asian samples land close together, in the mid-single-digit-percent range.
Both are prevalence estimates from specific populations (one a broad Japanese sample, the other Chinese adolescents and young adults), so they are best read as "roughly 1 in 20" rather than a single global figure. Palmar hyperhidrosis has been studied especially intensively in East Asia, where much of the surgical and epidemiological literature originates.
Palms in the context of other sweat sites
The same Japanese survey measured primary hyperhidrosis at four body sites. Palms and underarms were the most commonly reported, with soles and head somewhat lower. This puts the palmar figure in context alongside the other focal forms.
| Group | Value |
|---|---|
| Axillae (underarms) | 5.75% |
| Palms (hands) | 5.33% |
| Head/face | 4.7% |
| Soles (feet) | 2.79% |
Source: Fujimoto, Kawahara & Yokozeki, J Dermatol 2013. Chart is an original rendering of the cited data.
Sweaty hands usually start in childhood
Palmar hyperhidrosis characteristically begins early. In a US clinic series of 387 primary hyperhidrosis patients, the mean age of onset for palmoplantar (hands-and-feet) hyperhidrosis was 11.5 ± 8 years, significantly younger than axillary onset (20.0 ± 8.3 years) or craniofacial onset (25.4 ± 13.7 years). The Chinese survey found a similar pattern: the peak age of onset was 6-16 years, accounting for 95.6% of palmar cases.
In other words, sweaty hands are usually a childhood- or teenage-onset trait rather than something that first appears in adulthood, a feature clinicians use to distinguish primary focal hyperhidrosis from later-onset (secondary) causes.
Palmar prevalence across large surveys
Two large studies anchor the palmar prevalence estimate. They used different populations and methods, which is why the headline numbers differ slightly.
| Study | Population | Sample | Palmar prevalence |
|---|---|---|---|
| Fujimoto 2013 (Japan) | General population, ages 5-64 | 5,807 responses | 5.33% |
| Tu 2007 (Fuzhou, China) | High-school & college students | ~13,000 | 4.59% |
Both are questionnaire-based prevalence surveys in East Asian populations; figures are not adjusted to any single reference population.
Family history and sex
Palmar hyperhidrosis frequently runs in families. In the Fuzhou study, 15.3% of palmar cases reported a positive family history, and the condition affected both sexes roughly equally. A hereditary tendency is consistent with the early, childhood onset seen across studies.
Association with family history is not the same as a fully understood inheritance pattern (reported family-history rates vary by how they are collected), but the clustering is a well-documented feature of primary focal hyperhidrosis.
Impact and low help-seeking
Sweaty palms can interfere with everyday tasks that involve touch and grip (handling paper, tools, phones, or shaking hands) and the social visibility of wet hands is a recurring theme in quality-of-life research on hyperhidrosis. Yet formal help-seeking is strikingly low: in the Japanese survey, only 6.2% of people with focal hyperhidrosis had visited a medical institution about it.
That gap between how common palmar hyperhidrosis is and how rarely it is brought to a clinician suggests many people manage it on their own without knowing it is a recognized, treatable medical condition. Anyone whose hand sweating is distressing, interferes with work or daily life, or has changed suddenly can reasonably discuss it with a clinician, who can also rule out other causes.
Methodology and limitations
This page compiles two large questionnaire-based prevalence surveys (Fujimoto 2013, Japan; Tu 2007, China) and a US dermatology clinic series describing age of onset and body-site distribution (Walling 2009). Each figure was traced to its source abstract and confirmed.
Limitations: prevalence figures come from specific national and regional samples (Japanese general population; Chinese students) and are self-reported via questionnaire, so they are not interchangeable with a single global rate. The onset and body-site figures come from patients already attending a hyperhidrosis clinic, which is not a random population sample. Family history is self-reported. 'Association' with family history is not proof of a specific inheritance mechanism. Nothing here is a diagnosis or medical advice.
Frequently asked questions
- How common is palmar hyperhidrosis (sweaty hands)?
- In large surveys it affects roughly 4.6-5.3% of people: 5.33% in a Japanese general-population study and 4.59% among students in Fuzhou, China. That is on the order of 1 in 20, though the exact rate depends on the population studied.
- At what age do sweaty hands usually start?
- Usually in childhood or the teenage years. A clinic series found a mean onset of about 11.5 years for palmoplantar hyperhidrosis, and a Chinese survey found 95.6% of cases began between ages 6 and 16.
- Is palmar hyperhidrosis hereditary?
- It often clusters in families. In the Fuzhou study, 15.3% of palmar cases reported a positive family history. A family history is a recognized feature of primary focal hyperhidrosis, though reported rates vary by how they are collected.
- Does palmar hyperhidrosis affect men and women differently?
- The Fuzhou survey reported that primary palmar hyperhidrosis affected both sexes roughly equally.
- Why do the prevalence numbers come mostly from Asia?
- Much of the large-scale epidemiological and surgical research on palmar hyperhidrosis has been conducted in East Asia. The Japanese (5.33%) and Chinese (4.59%) surveys are among the largest, which is why they anchor most prevalence estimates.
- Should I see a doctor about sweaty hands?
- Palmar hyperhidrosis is common yet rarely brought to a clinician. Only about 6.2% of people with focal hyperhidrosis in one survey had sought medical care. If hand sweating is distressing, disrupts daily life, or started suddenly, it is reasonable to discuss it with a clinician who can also rule out other causes.
Sources
Primary peer-reviewed studies and official sources first, then reviews and institutional framing (secondary).
- Fujimoto T, Kawahara K, Yokozeki H. Epidemiological study and considerations of primary focal hyperhidrosis in Japan: from questionnaire analysis. J Dermatol. 2013;40(11):886-890. PubMed
- Tu YR, Li X, Lin M, Lai FC, Li YP, Chen JF, Ye JG. Epidemiological survey of primary palmar hyperhidrosis in adolescent in Fuzhou of People's Republic of China. Eur J Cardiothorac Surg. 2007;31(4):737-739. PubMed
- Walling HW. Primary hyperhidrosis increases the risk of cutaneous infection: a case-control study of 387 patients. J Am Acad Dermatol. 2009;61(2):242-246 (age of onset and body-site distribution). PubMed
How to cite this page
Sweat Explained. Palmar Hyperhidrosis (Sweaty Hands): Statistics and Impact. Published 2026-07-13; last reviewed 2026-07-13. Available at: https://sweatexplained.com/research/palmar-hyperhidrosis-statistics
Please cite the original studies for the underlying figures. Journalists are welcome to link to this page; the charts are original renderings of the cited data.