Sciatica
Alternative Names
Neuropathy - sciatic nerve; Sciatic nerve dysfunctionSymptoms
- Sensation changes
- Of the back of the calf or the sole of the foot
- Numbness, decreased sensation
- Tingling, burning sensation
- Pain, may be severe
- Abnormal sensations
- Weakness of the knee or foot
- Difficulty walking
- Inability to move the foot (in severe cases)
- Inability to bend the knee (in severe cases)
Exams and Tests
Sciatica might be revealed by a neuromuscular examination of the legs by a physician. There may be weakness of knee bending or foot movement, or difficulty bending the foot inward or down. Reflexes may be abnormal, with weak or absent ankle-jerk reflex. Pain down the leg can be reproduced by lifting the leg straight up off the examining table.
Tests that reveal sciatic nerve dysfunction may include:
- EMG (a recording of electrical activity in muscles)
- Nerve conduction tests
Tests are guided by the suspected cause of the dysfunction, as suggested by the history, symptoms, and pattern of symptom development. They may include various blood tests, x-rays, MRIs, or other tests and procedures.
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