Research
Hyperhidrosis and Mental Health: What the Evidence Shows
Across several studies, people with hyperhidrosis report anxiety and depression more often than people without it. In the largest analysis — a US cohort of more than 180,000 people — the adjusted odds of a depression or anxiety diagnosis were about 1.76 times higher with hyperhidrosis. This is a consistent association, not proof of cause: the studies cannot say whether sweating drives distress, distress worsens sweating, or a shared factor drives both. This page reports what the evidence shows and is careful to separate screening scores from clinical diagnoses.
Published 2026-07-12 · Last reviewed 2026-07-12 · Educational information, not medical advice.
Key statistics at a glance
1.76×
adjusted odds of a depression/anxiety diagnosis with hyperhidrosis vs matched controls (95% CI 1.72–1.80)
Klein 2020 (US claims, n=181,935)
21% vs 8%
anxiety screen-positive, hyperhidrosis vs no hyperhidrosis (dermatology outpatients)
Bahar 2016
27% vs 10%
depression screen-positive, hyperhidrosis vs no hyperhidrosis
Bahar 2016
41% vs 28%
diagnosed with depression/anxiety over 12 months, hyperhidrosis vs controls
Klein 2020
Screening studies: higher rates with hyperhidrosis
In a cross-sectional study of 2,017 dermatology outpatients in Canada and China, screen-positive rates for both anxiety (GAD-7) and depression (PHQ-9) were roughly two to three times higher in people with hyperhidrosis. The difference remained after adjusting for demographics and other skin conditions.
| Group | Value |
|---|---|
| Anxiety — with hyperhidrosis | 21.3% |
| Anxiety — without | 7.5% |
| Depression — with hyperhidrosis | 27.2% |
| Depression — without | 9.7% |
Source: Bahar et al., J Am Acad Dermatol 2016. Chart is an original rendering of the cited data.
The largest dataset: an adjusted odds ratio of 1.76
The strongest quantitative evidence comes from a US retrospective cohort using commercial insurance claims: 44,484 people with hyperhidrosis compared with 137,451 matched controls. Over 12 months, 41.1% of the hyperhidrosis group had a recorded depression or anxiety diagnosis versus 28.2% of controls. After adjustment, the odds of depression/anxiety were 1.76 times higher (95% confidence interval 1.72–1.80).
Because these are recorded clinical diagnoses in a very large population, the direction of the association is stable — but a claims database still cannot establish cause and effect.
What different studies found
Estimates vary with the population and the measurement tool. Anxiety is elevated fairly consistently; depression findings are more mixed.
| Study | Population | Measure | Anxiety | Depression |
|---|---|---|---|---|
| Bahar 2016 | 2,017 derm outpatients (Canada/China) | GAD-7 / PHQ-9 screen | 21.3% vs 7.5% | 27.2% vs 9.7% |
| Klein 2020 | 181,935 (US claims) | Recorded diagnosis | combined 41.1% vs 28.2%; adjusted OR 1.76 | (combined with anxiety) |
| Braganza 2014 | 197 primary-HH patients (Brazil) | HADS screen | 49.6% | 11.2% |
Screen-positive rates and recorded diagnoses are different measures and are not directly comparable.
Why the numbers vary so widely
A systematic review of seven controlled studies found reported anxiety ranging from 0% to 49.6% and depression from 0% to 60%. That enormous spread is driven by patient selection (clinic vs registry vs specialist referral) and by which questionnaire was used, not by a settled underlying rate. The consistent finding across studies is directional: anxiety and depression are more common in hyperhidrosis than in comparison groups. The exact percentage depends heavily on how and whom you measure.
Association is not causation
Every study here is cross-sectional or retrospective, which means none can establish direction. Excessive sweating could contribute to anxiety; anxiety can itself increase sweating; and a shared underlying factor could raise both. The evidence supports a real and repeated association — it does not support a claim that hyperhidrosis causes mental illness or vice versa. It is also worth separating two kinds of figures: questionnaire "screen-positive" rates (like the 21–49% anxiety figures) reflect scores above a cutoff, not confirmed diagnoses, while the 41.1% figure reflects recorded clinical diagnoses. They should not be read as the same thing.
Methodology and limitations
This page draws on two primary studies (Bahar 2016 cross-sectional screening; Klein 2020 retrospective claims cohort), a third primary screening study (Braganza 2014), and a systematic review (Kristensen 2020) for the overall range. Each figure was traced to its source.
Limitations: all designs are cross-sectional or retrospective and establish association only, never causation. Screening instruments (GAD-7, PHQ-9, HADS) identify people above a symptom cutoff, not confirmed clinical diagnoses; the claims-based figure captures recorded diagnoses but depends on coding. Populations differ (dermatology clinics, a national claims database, a specialist Brazilian cohort), which is why absolute percentages vary widely. Nothing here is a diagnosis, a treatment recommendation, or medical advice; anyone struggling with mood or anxiety should speak with a qualified professional.
Frequently asked questions
- Are anxiety and depression more common in people with hyperhidrosis?
- Multiple studies report higher rates. Among dermatology outpatients, screen-positive anxiety was 21.3% and depression 27.2% with hyperhidrosis, versus 7.5% and 9.7% without (Bahar 2016).
- How much higher is the risk in large datasets?
- In a US cohort of 181,935 people, 41.1% with hyperhidrosis had a recorded depression or anxiety diagnosis versus 28.2% of controls — an adjusted odds ratio of 1.76 (95% CI 1.72–1.80) (Klein 2020).
- Does hyperhidrosis cause anxiety or depression?
- The evidence cannot say. These studies are cross-sectional or claims-based and show an association, not causation — sweating could worsen mood, mood could worsen sweating, or a shared factor could drive both.
- Is anxiety or depression more strongly linked?
- It varies by study. Some (Braganza 2014) found elevated anxiety (49.6%) but near-typical depression (11.2%); others (Bahar 2016) found both elevated. Instruments and patient selection differ.
- What's the difference between a screening score and a diagnosis?
- Screening tools like GAD-7, PHQ-9, and HADS flag people who score above a cutoff — that is not the same as a confirmed clinical diagnosis. The 41.1% figure from the US claims study reflects recorded diagnoses. The two types of number are not directly comparable.
- Why do the reported percentages range so widely?
- A systematic review of seven controlled studies found anxiety from 0% to 49.6% and depression from 0% to 60%, driven by different populations, control groups, and measurement tools (Kristensen 2020).
Sources
Primary peer-reviewed studies and official sources first, then reviews and institutional framing (secondary).
- Bahar R, Zhou P, Liu Y, et al. The prevalence of anxiety and depression in patients with or without hyperhidrosis (HH). J Am Acad Dermatol. 2016;75(6):1126–1133. PubMed
- Klein SZ, Hull M, Gillard KK, Peterson-Brandt J. Treatment patterns, depression, and anxiety among US patients diagnosed with hyperhidrosis: a retrospective cohort study. Dermatol Ther (Heidelb). 2020;10(6):1299–1314. Full text
- Bragança GMG, et al. Evaluation of anxiety and depression prevalence in patients with primary severe hyperhidrosis. An Bras Dermatol. 2014;89(2):230–235. PubMed
- Kristensen JK, Vestergaard DG, Swartling C, Bygum A. Association of primary hyperhidrosis with depression and anxiety: a systematic review. Acta Derm Venereol. 2020;100(1):adv00044. (secondary) Full text
How to cite this page
Sweat Explained. Hyperhidrosis and Mental Health: What the Evidence Shows. Published 2026-07-12; last reviewed 2026-07-12. Available at: https://sweatexplained.com/research/hyperhidrosis-and-mental-health
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.