In pain assessment, which term refers to what is creating pain in the body's system, which may be different from where the pain is felt?

• A. Source
• B. Cause
• C. Symptom
• D. Trigger

Answer: (B)

Pain arises from the cause—the underlying factor or process that generates the pain signal in the body, such as tissue injury, inflammation, or nerve dysfunction. This cause can be located somewhere different from where the person feels the pain, which is why you can have referred pain. The term source describes the physical origin of the pathology, which is related but isn’t the word that focuses on what creates the pain itself. The symptom is the experience of pain, and the trigger is what begins or aggravates pain but doesn’t name the root driver. So, the best term for what creates the pain in the body's system is the cause.