Generalized Hypersensitivity in Patients With Fibromyalgia Syndrome

Fibromyalgia Clinical Trial

Official title:

Generalized Hypersensitivity in Patients With Fibromyalgia Syndrome

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04415866
• Other study ID #: IRB202000992
• Status: Recruiting
• Phase: N/A
• Start date: August 28, 2020
• Est. completion date: July 1, 2025

Study information

• Verified date: April 2024
• Source: University of Florida
• Contact: Melyssa Godfrey, BS
• Phone: 352-265-8901
• Email: painresearch[@]medicine.ufl.edu
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Fibromyalgia (FM) is a chronic musculoskeletal pain disorder with unknown causes. Our previous studies showed abnormal sensations of second pain (wind-up), indicating central hypersensitivity as an important mechanism of FM. Triggering events have been implicated as the cause of central hypersensitivity.

Description:

Increasing evidence has shown that the hypersensitivity of FM is not limited to painful stimuli but seems to extend to non-painful stimuli as well. These stimuli include smell, taste, touch, light, and sound. This study will provide detailed QST examinations of FM subjects and controls' responses to light using visually evoked potentials (VEP). In addition, careful characterization of experimental pain responding across multiple sensory modalities will be examined.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 100
• Est. completion date: July 1, 2025
• Est. primary completion date: July 1, 2025
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 70 Years

Eligibility

Inclusion Criteria:

• Individuals diagnosed with FM will have pain of > 3 months and meet the 1990 and 2011 Diagnostic Criteria for FM (ACR)
• Healthy, pain-free age and sex matched controls without chronic pain

Exclusion Criteria:

• Presence of chronic disease (e.g. cancer, cardiovascular disease, liver disease, kidney disease, diabetes, etc.).
• FM patients must be willing to discontinue or hold their FM related medications for a minimum of one day prior to the visit.
• Significant vision loss not corrected by eye wear
• Family history of photosensitive epilepsy

Related Conditions & MeSH terms

• Fibromyalgia
• Hypersensitivity
• Myofascial Pain Syndromes

Intervention

Behavioral:
• Paced Auditory Serial Addition task (PASAT)
Single and double digits are presented at intervals between 2 and 3 seconds and the participant must add each new digit to the one immediately prior to it. The participants will be asked to indicate by electronic button press whether the sum of the addition is 13 or not. The duration of the PASAT will be two 12-min tasks.

Locations

Country	Name	City	State
United States	University of Florida	Gainesville	Florida

Sponsors (1)

Lead Sponsor	Collaborator
University of Florida

Country where clinical trial is conducted

United States, 

References & Publications (4)

Frank MG, Fonken LK, Watkins LR, Maier SF. Microglia: Neuroimmune-sensors of stress. Semin Cell Dev Biol. 2019 Oct;94:176-185. doi: 10.1016/j.semcdb.2019.01.001. Epub 2019 Jan 9. — View Citation

Geisser ME, Casey KL, Brucksch CB, Ribbens CM, Appleton BB, Crofford LJ. Perception of noxious and innocuous heat stimulation among healthy women and women with fibromyalgia: association with mood, somatic focus, and catastrophizing. Pain. 2003 Apr;102(3):243-250. doi: 10.1016/S0304-3959(02)00417-7. — View Citation

Geisser ME, Glass JM, Rajcevska LD, Clauw DJ, Williams DA, Kileny PR, Gracely RH. A psychophysical study of auditory and pressure sensitivity in patients with fibromyalgia and healthy controls. J Pain. 2008 May;9(5):417-22. doi: 10.1016/j.jpain.2007.12.006. Epub 2008 Feb 15. — View Citation

Geisser ME, Strader Donnell C, Petzke F, Gracely RH, Clauw DJ, Williams DA. Comorbid somatic symptoms and functional status in patients with fibromyalgia and chronic fatigue syndrome: sensory amplification as a common mechanism. Psychosomatics. 2008 May-Jun;49(3):235-42. doi: 10.1176/appi.psy.49.3.235. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Verbal Pain Ratings of Painful Heat and Pressure Stimuli using a Numerical Pain Scale from 0 - 100	FM and control subjects will provide verbal ratings of experimental pain stimuli. For this purpose a numerical ratings scale (0-100) will be used ranging from "no sensation" to the "most intense sensation possible". All measures will be obtained in triplicates and the averages will be used for statistical comparisons.	1 hour
Primary	Visual Evoked Potentials (VEP) During Flicker	FM and control subject will focus on a light source while VEPs are obtained. EEG tracings will be evaluated by special software to detect VEP. For intensity ratings of the flicker stimulus a numerical ratings scale (0-100) will be used ranging from "no sensation" to the "most intense sensation possible". All measures will be obtained in triplicates and the averages will be used for statistical comparisons.	1 hour
Secondary	Response to 2011 Fibromyalgia Criteria Questionnaire	FM and control subjects will complete the 2011 FM Questionnaire. The answers of this questionnaire will be added to obtain the wide-spread pain index and the somatic symptom score. The scores will be combined to obtain the final score. Scores of >12 fulfill the Criteria for Fibromyalgia	0.5 hours
Secondary	Response to the Center for Epidemiological Studies (CES-D) Depression Questionnaire	FM and control subjects will complete the CES-D. The answers of this questionnaire will be combined to obtain a final score. Total scores of >15 are consistent with the diagnosis of major depression.	0.5 hours