Unless you are totally immobilized from a back injury, your doctor probably will examine your range of motion and nerve function and touch your body to locate the area of discomfort.
Blood and urine tests may be done to determine if the pain is caused by an infection or other systemic problem.
X-rays are useful in pinpointing broken bones or other skeletal defects. They can sometimes help locate problems in connective tissue. To analyze soft-tissue or disc damage, computed tomography (CT) or magnetic resonance imaging (MRI) scans may be needed. X-rays and imaging studies are generally used to confirm your symptoms and exam results to identify the source of pain. Scans are also utilized in cases of direct trauma to the back, back pain with fever, or weakness or numbness in the limbs. To determine possible nerve or muscle damage, an electromyogram (EMG) may be ordered.
As many as 4 out of every 10 people will get sciatica, or irritation of the sciatic nerve, at some point in their life. This nerve comes from either side of the lower spine and travels through the pelvis and buttocks. Then the nerve passes along the back of each upper leg before it divides at the knee into branches that go to the feet.
Anything that puts pressure on or irritates this nerve can cause pain that shoots down the back of one buttock or thigh. The sensation of pain can vary widely. Sciatica...