Pain scale: A pain scale measures a patient's pain intensity or other features. Pain scales are based on self-report, observational (behavioral), or physiological data.Cancer pain: Pain in cancer may arise from a tumor compressing or infiltrating nearby body parts; from treatments and diagnostic procedures; or from skin, nerve and other changes caused by a hormone imbalance or immune response. Most chronic (long-lasting) pain is caused by the illness and most acute (short-term) pain is caused by treatment or diagnostic procedures.Chronic painHypoalgesia: Hypoalgesia or hypalgesia denotes a decreased sensitivity to painful stimuli.Low back painAvijit Lahiri: Avijit Lahiri is a researcher in cardiology[http://www.journals.Pelvic congestion syndrome: Pelvic congestion syndrome (also known as pelvic vein incompetence) is a chronic medical condition in women caused by varicose veins in the lower abdomen. The condition causes chronic pain, often manifesting as a constant dull ache, which can be aggravated by standing.Thermal grill illusion: The thermal grill illusion is a sensory illusion originally demonstrated in 1896 by the Swedish physician Torsten Thunberg. The illusion is created by an interlaced grill of warm (e.Generalizability theory: Generalizability theory, or G Theory, is a statistical framework for conceptualizing, investigating, and designing reliable observations. It is used to determine the reliability (i.