One in twenty people suffer some kind of pain regularly. Pain is associated with a wide range of injury and disease, and is sometimes the disease itself. Some conditions may have pain and associated symptoms arising from a discrete cause, such as postoperative pain or pain associated with a malignancy, or may be conditions in which pain constitutes the primary problem, such as neuropathic pains or headaches.
PAIN
Definition:
Pain is the physical feeling caused by disease, injury, or something that hurts the body.