Many patients perform some self-care when they first hurt their lower back, hoping this will keep them out of a doctor's office. While home remedies can sometimes make the pain go away, sometimes they don't. It just depends on what you try. When the back is first hurt, it's often a sprain/strain type of injury with accompanying muscle spasm. When a nerve in the low back becomes pinched or irritated, the body will protect the delicate nerves by keeping you from moving and risking further nerve injury. The easiest way for the body to do this is to cause the back muscles to spasm in the injured area.