Chronic pain conditions
The 200 condition terms that appear most often on chronic pain registry records. Labels are as entered by registrants, so close variants are listed separately.
- Chronic Pain134 Canada · 1972 total
- Low Back Pain16 Canada · 632 total
- Pain23 Canada · 434 total
- Chronic Low Back Pain7 Canada · 384 total
- Pain, Chronic16 Canada · 353 total
- Neck Pain7 Canada · 299 total
- Chronic Low-back Pain10 Canada · 245 total
- Fibromyalgia13 Canada · 210 total
- Neuropathic Pain8 Canada · 163 total
- Back Pain7 Canada · 145 total
- Chronic Neck Pain3 Canada · 135 total
- Knee Pain Chronic6 Canada · 122 total
- Musculoskeletal Pain6 Canada · 116 total
- Knee Osteoarthritis5 Canada · 102 total
- Opioid Use6 Canada · 100 total
- Osteoarthritis7 Canada · 98 total
- Depression5 Canada · 96 total
- Endometriosis4 Canada · 84 total
- Postoperative Pain1 Canada · 81 total
- Chronic Pain Syndrome5 Canada · 78 total
- Pain, Postoperative6 Canada · 77 total
- Chronic Low Back Pain (CLBP)4 Canada · 71 total
- Chronic Pelvic Pain1 Canada · 70 total
- Pelvic Pain2 Canada · 67 total
- Migraine4 Canada · 66 total
- Osteoarthritis, Knee6 Canada · 66 total
- Acute Pain3 Canada · 66 total
- Anxiety5 Canada · 66 total
- Quality of Life3 Canada · 62 total
- Chronic Musculoskeletal Pain0 Canada · 61 total
- Breast Cancer7 Canada · 60 total
- Back Pain Lower Back Chronic1 Canada · 59 total
- Headache3 Canada · 53 total
- Chronic Pelvic Pain Syndrome2 Canada · 52 total
- Pain, Acute4 Canada · 52 total
- Chronic Pancreatitis0 Canada · 51 total
- Shoulder Pain3 Canada · 49 total
- Cancer10 Canada · 46 total
- Coronary Artery Disease4 Canada · 44 total
- Hip Pain Chronic2 Canada · 44 total
- Insomnia6 Canada · 42 total
- Chronic Knee Pain1 Canada · 41 total
- Rheumatoid Arthritis4 Canada · 40 total
- Chronic Shoulder Pain1 Canada · 40 total
- Chronic Stable Angina2 Canada · 38 total
- Cerebral Palsy5 Canada · 37 total
- Chronic Low-back Pain (cLBP)1 Canada · 36 total
- Chronic Postoperative Pain2 Canada · 35 total
- Pain Management2 Canada · 35 total
- Chronic Migraine, Headache1 Canada · 35 total
- Opioid Use Disorder1 Canada · 35 total
- Chronic Migraine2 Canada · 34 total
- Irritable Bowel Syndrome2 Canada · 33 total
- Spinal Cord Injuries1 Canada · 33 total
- Complex Regional Pain Syndromes3 Canada · 33 total
- Failed Back Surgery Syndrome1 Canada · 32 total
- Interstitial Cystitis1 Canada · 31 total
- Analgesia0 Canada · 30 total
- Multiple Sclerosis1 Canada · 29 total
- Hypertension7 Canada · 28 total
- Lower Back Pain1 Canada · 28 total
- Chronic Widespread Pain0 Canada · 28 total
- Chronic Back Pain0 Canada · 28 total
- Abdominal Pain1 Canada · 27 total
- Degenerative Disc Disease1 Canada · 27 total
- Chronic Prostatitis2 Canada · 27 total
- Chronic Postsurgical Pain0 Canada · 27 total
- Central Sensitisation1 Canada · 27 total
- Arthritis6 Canada · 26 total
- Chronic Non-specific Low Back Pain0 Canada · 26 total
- Low Back Pain, Mechanical1 Canada · 26 total
- Healthy2 Canada · 24 total
- Sickle Cell Disease0 Canada · 24 total
- Chronic Disease4 Canada · 24 total
- Angina Pectoris3 Canada · 24 total
- Pain, Intractable2 Canada · 24 total
- Chronic Prostatitis With Chronic Pelvic Pain Syndrome2 Canada · 24 total
- Spinal Cord Injury1 Canada · 24 total
- Chronic Neuropathic Pain3 Canada · 23 total
- Inguinal Hernia1 Canada · 23 total
- Cervical Pain1 Canada · 23 total
- Diabetes5 Canada · 23 total
- Fatigue0 Canada · 23 total
- Pain, Neuropathic0 Canada · 23 total
- Knee Arthritis1 Canada · 23 total
- Pain Syndrome0 Canada · 23 total
- Surgery2 Canada · 22 total
- Post Operative Pain2 Canada · 22 total
- Stroke5 Canada · 22 total
- Osteo Arthritis Knee1 Canada · 22 total
- Obesity2 Canada · 21 total
- Sleep2 Canada · 21 total
- Mastectomy0 Canada · 21 total
- Chronic Non-specific Neck Pain0 Canada · 21 total
- Phantom Limb Pain1 Canada · 20 total
- Cancer Pain0 Canada · 20 total
- Bladder Pain Syndrome1 Canada · 20 total
- Neuralgia2 Canada · 19 total
- Low Back Pain, Recurrent2 Canada · 19 total
- Anesthesia3 Canada · 19 total
- Chronic Lower Back Pain0 Canada · 19 total
- Lumbar Radiculopathy0 Canada · 19 total
- Pain, Back0 Canada · 19 total
- Sciatica1 Canada · 18 total
- Shoulder Pain Chronic1 Canada · 18 total
- Chronic Nonspecific Low Back Pain0 Canada · 18 total
- Heart Failure4 Canada · 18 total
- Mechanical Low Back Pain2 Canada · 18 total
- Non-specific Chronic Low Back Pain1 Canada · 18 total
- Ptsd0 Canada · 18 total
- Opioid-Related Disorders0 Canada · 18 total
- Hip Osteoarthritis1 Canada · 18 total
- Opioid-use Disorder0 Canada · 18 total
- Lower Back Pain Chronic0 Canada · 18 total
- Prostatitis2 Canada · 17 total
- Peripheral Neuropathy0 Canada · 17 total
- Migraine Disorders0 Canada · 17 total
- Chronic Post Operative Pain2 Canada · 17 total
- Chronic Fatigue Syndrome1 Canada · 16 total
- Hernia, Inguinal1 Canada · 16 total
- Myofascial Pain Syndrome0 Canada · 16 total
- Nociceptive Pain0 Canada · 16 total
- Neck Pain Musculoskeletal0 Canada · 16 total
- Opioid Dependence2 Canada · 16 total
- Chronic Mechanical Neck Pain1 Canada · 16 total
- Hyperalgesia1 Canada · 15 total
- Myocardial Ischemia1 Canada · 15 total
- Breast Neoplasms1 Canada · 15 total
- Traumatic Brain Injury0 Canada · 15 total
- Chronic Pain, Widespread0 Canada · 15 total
- Fibromyalgia (FM)0 Canada · 15 total
- Diabetic Neuropathies0 Canada · 14 total
- Chronic Obstructive Pulmonary Disease3 Canada · 14 total
- Chronic Kidney Diseases1 Canada · 14 total
- Chronic Post-surgical Pain1 Canada · 14 total
- Radiculopathy0 Canada · 14 total
- Disability Physical0 Canada · 14 total
- Chronic Pain (Back / Neck)1 Canada · 14 total
- Constipation1 Canada · 13 total
- Critical Limb Ischemia1 Canada · 13 total
- Headache Disorders0 Canada · 13 total
- Osteoarthritis, Hip3 Canada · 13 total
- Carpal Tunnel Syndrome0 Canada · 13 total
- Anxiety Disorders0 Canada · 13 total
- Stable Chronic Angina0 Canada · 13 total
- Lumbar Disc Herniation0 Canada · 13 total
- Plantar Fasciitis, Chronic0 Canada · 13 total
- Non Specific Chronic Low Back Pain0 Canada · 13 total
- Sleep Disturbance0 Canada · 13 total
- Virtual Reality0 Canada · 13 total
- Kinesiophobia1 Canada · 13 total
- Postoperative Pain, Chronic0 Canada · 13 total
- Lymphoma1 Canada · 12 total
- Peripheral Arterial Disease0 Canada · 12 total
- Painful Bladder Syndrome1 Canada · 12 total
- Epilepsy1 Canada · 12 total
- Asthma3 Canada · 12 total
- Joint Pain3 Canada · 12 total
- Widespread Chronic Pain2 Canada · 12 total
- Chronic Pain Due to Injury0 Canada · 12 total
- Chronic Insomnia1 Canada · 12 total
- Central Sensitization0 Canada · 12 total
- Physical Therapy0 Canada · 12 total
- Temporomandibular Disorder0 Canada · 12 total
- Chronic Non-Specific Low Back Pain0 Canada · 12 total
- Dexmedetomidine0 Canada · 12 total
- Inflammation1 Canada · 11 total
- Angina0 Canada · 11 total
- Ketamine0 Canada · 11 total
- Plantar Fasciitis0 Canada · 11 total
- Stress0 Canada · 11 total
- Temporomandibular Joint Disorders0 Canada · 11 total
- Diabetes Mellitus1 Canada · 11 total
- Fatigue Syndrome, Chronic0 Canada · 11 total
- Fibromyalgia Syndrome0 Canada · 11 total
- Physical Activity0 Canada · 11 total
- Osteoporosis3 Canada · 11 total
- Pain Measurement0 Canada · 11 total
- Acute Postoperative Pain0 Canada · 11 total
- Thoracic Surgery2 Canada · 11 total
- Opioid Misuse0 Canada · 11 total
- Older Adults0 Canada · 11 total
- Inflammatory Bowel Diseases2 Canada · 11 total
- Back Pain, Low0 Canada · 11 total
- Facet Joint Pain1 Canada · 11 total
- Parkinson Disease1 Canada · 11 total
- Exercise Therapy2 Canada · 11 total
- Nociplastic Pain1 Canada · 11 total
- Postoperative Pain, Acute0 Canada · 11 total
- Long COVID0 Canada · 11 total
- Low Back Pain, Chronic0 Canada · 11 total
- Ischemic Heart Disease0 Canada · 10 total
- Temporomandibular Disorders1 Canada · 10 total
- Posttraumatic Stress Disorder0 Canada · 10 total
- Arthralgia3 Canada · 10 total
- Chronic Low Back Pain (Non-specific, Uncomplicated)0 Canada · 10 total
- Amputation0 Canada · 10 total
- Complex Regional Pain Syndrome3 Canada · 10 total
- Postherpetic Neuralgia0 Canada · 10 total
- Osteoarthritis of the Knee0 Canada · 10 total
Source: ClinicalTrials.gov (US National Library of Medicine), snapshot October 2026. Check the registry for current recruiting status.