Not a final publication or clinical guideline.
Dutch working paper 0.2Open for critical review
ACNES in the Netherlands
A recognised diagnosis, an uncertain national burden and insufficiently measured downstream harm.
This English page explains the Dutch evidence audit of incidence estimates, diagnostic delay, healthcare use, societal consequences and treatment. It keeps measured findings, calculations, associations and missing evidence visibly separate.
CARETRAP · DUTCH WORKING PAPER 0.2ACNES
in the NetherlandsEvidence audit of scale, delay, costs and downstream harm21 pages · 16 July 2026
in the NetherlandsEvidence audit of scale, delay, costs and downstream harm21 pages · 16 July 2026
One source document, one maintained version.
The PDF is currently available in Dutch only. This English page is an explanatory overview, not a separate translated publication. Keeping one authoritative PDF prevents corrections and evidence updates from diverging between languages.
Sources, calculations and evidence limits are assessed side by side.
The English content on this page summarises the main argument and limitations.
Medical, methodological and formal reference checks remain necessary.
Read this as a working document.
The figures do not constitute a personal diagnosis, treatment recommendation or established nationwide cost estimate. An individual case is included as a signal, not as a representative average.
Why this work matters
The diagnosis is recognised. Its wider consequences are not adequately measured.
The Netherlands has a clinical guideline and specialist expertise for diagnosing and treating ACNES. At the same time, current nationwide data are lacking on the number of people affected, time to recognition, and physical, psychological, occupational and financial harm during a prolonged pathway.
Frequently repeated figures can therefore be meaningful and vulnerable at the same time. The working paper traces the origin of key claims, cautiously updates a historical cost basket and sets out what a new Dutch study would need to measure.
How to read the evidence
Five labels to prevent false certainty.
A precise-looking number is not automatically a nationwide fact. Each major claim therefore receives a visible evidence status.
Directly observed in a described study or documented specification.
Derived from measurements; assumptions materially affect the result.
A relationship is observed, but cause and attributable share are not fully established.
An individual experience or record: relevant for hypotheses, not representative.
Not studied or not studied sufficiently.
Downstream harm
Avoiding overclaiming is not the same as denial.
Chronic pain, depression and absence from work can reinforce one another. The average ACNES-specific causal contribution has not yet been measured well enough.
A lack of ACNES-specific evidence should not be mistaken for evidence that downstream harm does not exist.
Read the source
View the Dutch PDF on this page.
The PDF itself is in Dutch. If the embedded viewer is unavailable on your device, open the source in a new window.
Essential reading guide
What this document is and is not.
These limits are part of the publication and should not be hidden in small print.
Not medical advice
The publication does not replace assessment, diagnosis or treatment by a qualified healthcare professional. Do not change medication or treatment based on this website.
Not a final review
Working paper 0.2 is an exploratory evidence audit, not a systematic review, guideline or completed epidemiological study.
Not a nationwide cost fact
Historical amounts and price updates are indicative calculations. They do not establish which share of costs was avoidable.
A case is not representative
The anonymised case demonstrates what research may miss. One record cannot determine an average or causal share for all patients.
Sources may change
New research, corrections or independent review may lead to revisions. Always cite the version number and date.
Foundation being established
Caretrap | Stichting Zorgfuik has not yet been formally incorporated and is not a healthcare provider, regulator or complaints body.
Acute or serious symptoms?
No self-diagnosisSeek appropriate professional care.
For acute, rapidly worsening or unexplained abdominal pain, contact a doctor or emergency service. This publication is not intended for triage.
Review and corrections
Found an error or missing source?
Verifiable corrections from clinicians, researchers, methodologists, health economists and people with lived experience are welcome. Please include page number, claim and source wherever possible.