Skip to content

Pain Related Evoked Potentials (PREP) and Conditioned Pain Modulation (CPM) in patients with multiple sclerosis with and without central neuropathic pain

Pain Related Evoked Potentials (PREP) and Conditioned Pain Modulation (CPM) in patients with multiple sclerosis with and without central neuropathic pain

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
DRKS
Registry ID
DRKS00036009
Enrollment
75
Registered
2025-02-11
Start date
2022-09-06
Completion date
Unknown
Last updated
2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

G35.9

Interventions

Group 1: 25 patients with multiple sclerosis without pain complaints, who were examined crosssectionally 2022-2025 using PREP, a CPM test paradigm and standardized questionnaires (taking about 3 hours

Sponsors

BG UK Bergmannsheil gGmbH, Neurologische Klinik
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Inclusion criteria

Inclusion criteria: Inclusion criteria for patients with MS and chronic central neuropathic pain: - Confirmed diagnosis of multiple sclerosis based on the 2017 revised McDonald criteria - Presence of central neuropathic pain with symptom persistence or recurring pain episodes lasting > 3 months - Average pain intensity in the last 4 weeks =2 on the NRS (0-10) - Existing informed consent Inclusion criteria for patients with MS without chronic neuropathic pain: - Confirmed diagnosis of multiple sclerosis based on the McDonald criteria revised in 2017 - Not taking medication for the treatment of central neuropathic pain (e.g. amitryptiline, SNRI, pregabalin, lamotrigine, etc.) - Declaration of consent available

Exclusion criteria

Exclusion criteria: Exclusion criteria for patients with MS and chronic central neuropathic pain: - Lack of informed consent - Average pain intensity in the last 4 weeks 2 (NRS 0-10) - Current pain intensity > 0 (NRS 0-10) - Insufficient German language skills or other communication problems - Neuropathies (e.g. polyneuropathy), radiculopathies or nerve lesions - Chronic pain syndromes associated with multiple sclerosis - Other chronic pain syndromes (e.g. migraine) - Polyneuropathy - Spinal stenosis - Other neuropathic pain syndromes - Epilepsy treated with anticonvulsants - Psychiatric illness treated with anticonvulsants or antidepressants with proven effect on neuropathic pain - Treatment with cannabinoid-containing preparations - Opiate use - Other severe systemic or focal CNS affection - Other central or peripheral neurological diseases - Severe cognitive or psychiatric impairment

Design outcomes

Primary

MeasureTime frame
group differences in the length of N1-latency and magnitude of N1-P1-amplitude and the magnitude of CPM-effect at the time of the crosssectional examination

Secondary

MeasureTime frame
Evaluation of pain perception of PREP-stimuli on a numerical rating scale (NRS); sensory profile determined via bedside quantitative sensory testing (QST); Level of pain sensitivity in everyday life determined via Pain Sensitivity Questionnaire (PSQ), level of anxiety, depression and stress dtermined via Depression Anxiety Stress Scale (DASS-21), level of fatigue assessed via Fatigue Scale for Motor and Cognitive Function (FSMC); clinical neurological abnormalities assessed via classic clinical neurological examination

Countries

Germany

Contacts

Public ContactElena Enax-Krumova

BG UK Bergmannsheil gGmbH, Neurologische Klinik

elena.krumova@rub.de+49-234-302-3402

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026