Example image of eyePlorer eyePlorer map for 'Chronic pain': Pain International Association for the Study of Pain Brain Central nervous system Nociception Nociceptor Psychosomatic medicine Cognition Attention Engram (neuropsychology) Working memory Hydrocodone Ibuprofen Non-steroidal anti-inflammatory drug Opioid Paracetamol Fentanyl Hydromorphone Morphine Oxycodone Oxymorphone Transdermal patch Buprenorphine Heroin Methadone Pethidine Breakthrough pain Capsule Suppository Tablet Injection Addiction Drug tolerance Substance dependence Anticonvulsant Antidepressant Complex regional pain syndrome Neuropathy Gabapentin Seizure Cyclobenzaprine Orphenadrine Trazodone Clonidine Ablation Neuromodulation Pulsed radiofrequency Intrathecal pump Paresthesia Spinal cord stimulator