Hyperhidrosis in Children and Adolescents: The Data

How common is it in young people?

Hyperhidrosis is often thought of as an adult condition, but the data show it reaches into childhood and adolescence. In the Doolittle (2016) survey of 8,160 people designed to represent the US population, about 2.1% of those under 18 reported hyperhidrosis, against an overall national estimate of 4.8% (roughly 15.3 million people).

That under-18 figure is almost certainly an undercount of true onset. Because primary focal hyperhidrosis frequently starts in childhood or the teen years but is not always recognized or reported at that age, survey snapshots of minors tend to understate how early the condition begins. The age-of-onset data below tells that part of the story more directly.

Reported prevalence is present in childhood, rises sharply in young adulthood, and then declines with age, a pattern consistent with a condition that typically emerges around adolescence and early adulthood.

Where hyperhidrosis appears is tied to when it appears. In the same survey, the hands (palmar) were the earliest site to begin, in the mid-teens, while facial (craniofacial) sweating started latest. The overall mean onset was just under 20 years.

Diagnosed less often than it occurs

Hyperhidrosis is widely under-discussed with clinicians, which contributes to under-diagnosis. In the Doolittle survey, only about 51% of people with hyperhidrosis had ever discussed their sweating with a healthcare professional, meaning nearly half had not.

There is a notable bright spot for young people, though. Among those under 21, about 81% had been seen by a healthcare professional for it, compared with roughly 42% of adults. Young people were nearly twice as likely to be seen. One plausible reading is that when sweating begins early and visibly (often on the hands), families are more likely to bring it to a clinician's attention. The practical takeaway is that the condition is treatable and worth raising with a clinician; a professional can distinguish primary focal hyperhidrosis from sweating due to another cause.

Impact on school and emotional life

For a child or teen, sweaty hands can smudge schoolwork, complicate using devices, and make ordinary social contact (handshakes, holding hands, group work) a source of anxiety. A 2025 systematic review of 12 studies on the psychosocial effects of pediatric and adolescent hyperhidrosis quantified some of this burden. In one included study of 121 adolescents, 50.7% reported feeling moderately to extremely damaged emotionally by their hyperhidrosis before treatment; in another of 220 young patients, 64.1% rated their quality of life as very poor before treatment.

The same review noted that, among pediatric patients with chronic skin conditions, those with hyperhidrosis showed some of the highest rates of elevated depression and anxiety screening scores (about 40.9% and 31.8%, respectively). These are associations reported in clinic-based samples, not proof that hyperhidrosis causes mental-health conditions, and treatment-seeking groups may not represent all affected children. Still, the direction is consistent: the condition can weigh meaningfully on young people's daily and emotional lives.

How to read these figures

Two cautions help keep the numbers in proportion. First, the prevalence and onset data come from a single US self-report survey; self-reported conditions can be over- or under-reported, and the under-18 snapshot likely understates true early onset. Second, the school- and emotional-impact figures come from a secondary review of clinic-based studies, so they describe children who sought care and cannot be generalized to every young person who sweats heavily.

What the evidence supports is modest but useful: hyperhidrosis is present in a small but real share of children and adolescents, the hand-dominant form typically begins in the mid-teens, most young people who have it do reach a clinician, and it can carry a real emotional and social cost. A child or teen whose sweating interferes with daily activities can be evaluated by a clinician, who can confirm the type and discuss options.

Methodology and limitations

Prevalence and age-of-onset figures are taken directly from Doolittle et al. (2016), a survey of 8,160 people weighted to represent the US population, with 393 respondents reporting hyperhidrosis answering detailed follow-up questions. School- and emotional-impact figures come from a 2025 systematic review of 12 studies on psychosocial effects in pediatric and adolescent hyperhidrosis (secondary). Bellet (2010) is cited as a pediatric clinical review. Each figure was traced to its source and confirmed.

Limitations: the prevalence data are self-reported and cross-sectional, so the under-18 estimate likely understates true early onset, and reporting error is possible. Age-of-onset values are group means with standard errors, not exact ages. The impact figures come from clinic-based studies of children who sought care and cannot be generalized to all affected young people; associations with anxiety and depression are not evidence of causation. This page is general educational information, not a diagnosis or medical advice. A child or teen whose sweating disrupts daily life should be evaluated by a qualified clinician.

Frequently asked questions

How common is hyperhidrosis in children and teenagers?

In a nationally representative US survey, about 2.1% of people under 18 reported hyperhidrosis, against an overall US estimate of 4.8%. Because early cases are often unrecognized, the under-18 figure likely understates how often the condition actually begins in childhood.

At what age does it usually start?

It depends on the body site. In the same survey, palmar (hand) hyperhidrosis began earliest, at a mean age of about 16.6 years, the overall mean onset was 19.7 years, and facial sweating started latest at about 20.9 years. Hand-dominant sweating often begins during the school years.

Is childhood hyperhidrosis under-diagnosed?

It is under-discussed. Only about 51% of people with hyperhidrosis had ever raised it with a clinician. Encouragingly, young people fared better: about 81% of under-21s had been seen by a healthcare professional, versus roughly 42% of adults.

How does it affect school and emotional life?

A secondary review found that 50.7% of adolescent patients felt moderately to extremely damaged emotionally before treatment, and 64.1% of young patients in another study rated their quality of life as very poor. These come from children who sought care and describe association, not proven cause.

Is heavy sweating in a child always hyperhidrosis?

Not necessarily. Sweating can also stem from other medical causes, so heavy or new sweating in a child is worth a clinician's evaluation. A professional can distinguish primary focal hyperhidrosis from sweating driven by another underlying condition.

Does hyperhidrosis cause anxiety or depression in kids?

The data show an association, not causation. In clinic-based samples, children with hyperhidrosis had among the highest elevated depression (about 40.9%) and anxiety (about 31.8%) screening scores, but these studies cannot establish that the sweating causes those conditions.

Sources

Primary peer-reviewed studies and official sources first, then reviews and institutional framing (secondary).

1. Doolittle J, Walker P, Mills T, Thurston J. Hyperhidrosis: an update on prevalence and severity in the United States. Arch Dermatol Res. 2016;308(10):743–749. Survey of 8,160; under-18 prevalence 2.1%; palmar onset mean 16.6 years; 51% ever discussed with an HCP; 81% of under-21s vs 42% of adults seen. Full text (PMC5099353)
2. Systematic review of pediatric and adolescent hyperhidrosis. Psychosocial Impact of Pediatric and Adolescent Hyperhidrosis: A Systematic Review and Call for Research. 12 studies; 50.7% of adolescents felt moderately-to-extremely emotionally damaged; 64.1% rated quality of life very poor pre-treatment. (secondary) Full text (PMC12038310)
3. Bellet JS. Diagnosis and treatment of primary focal hyperhidrosis in children and adolescents. Semin Cutan Med Surg. 2010;29(2):121–126. (secondary) PubMed

How to cite this page

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