Investigating pain mechanisms in low back pain patients

Back Pain - Linking Phenotype to Pain Mechanism and Outcome.

Balgrist University Hospital · NCT04433299

This study is trying to understand the different ways people experience low back pain by looking at their pain experiences and testing their responses to pain.

Quick facts

Study typeObservational
Enrollment150 (estimated)
Ages18 Years to 80 Years
SexAll
SponsorBalgrist University Hospital (other)
Locations1 site (Zürich, Zurich)
Trial IDNCT04433299 on ClinicalTrials.gov

What this trial studies

This observational study aims to identify different clinical, psychophysical, and neurophysiological phenotypes among patients suffering from low back pain. Participants will complete a detailed questionnaire about their pain experiences, including pain drawings, and some will undergo standardized quantitative sensory testing and fMRI procedures to assess their pain mechanisms. The study seeks to enhance understanding of how various factors contribute to low back pain outcomes.

Who should consider this trial

Good fit: Ideal candidates are individuals experiencing low back pain that is not attributable to serious underlying conditions.

Not a fit: Patients with major medical or psychiatric conditions affecting pain sensitivity or those with contraindications to MRI may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to more personalized treatment approaches for low back pain based on identified pain mechanisms.

How similar studies have performed: While similar studies have explored pain mechanisms, this specific approach linking phenotype to pain outcomes is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

-primary complaint: low back pain clinically not attributable to red flags

Exclusion Criteria:

* any major medical or psychiatric condition that affects pain sensitivity
* contraindications to MRI

Where this trial is running

Zürich, Zurich

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Low Back Pain, low back pain, phenotype

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.