Back pain is a very complicated personal experience.
It is important to note that the severity of pain from lower back injuries is often unrelated to the extent of physical damage present. Muscle spasm from a simple back strain can cause excruciating back pain that can limit one's ability to walk or even stand, whereas a large herniated disc can be completely painless. The type of pain and its area of distribution help guide the physician in making a preliminary diagnosis and determining the appropriate treatment plan. It is important that a careful history and physical exam be performed at the initial physician visit. There are many structures in the lower back that can cause severe pain.