Physical therapists typically treat lower back pain (LBP) or sciatica (pain, numbness, or tingling down the back of the leg) that are caused by one of the following: spinal stenosis or arthritis, a herniated lumbar disc or a sacroiliac (SI) dysfunction. LBP may also stem from a variety of other medical conditions such as a tumor, cancer, or poor kidney function. Treatment for LPB and Sciatica is best done with the partnership of a medical professional who understands the different treatments for each diagnosis to ensure the right solution is in place to relieve your suffering. However, here are some generic tips that could make you more comfortable until you seek out medical intervention.