Learn to recognize the early signs of Lou Gehrig's disease, understand how it develops, and navigate the next steps.
Getting an accurate diagnosis as soon as possible is essential, as available ALS treatments are more effective when started early. There is no single test that can definitively diagnose ALS. The doctor will review the person's medical history and complete a full physical and neurological exam, which assesses reflexes and muscle strength. Some tests may be performed to rule out other conditions. Providers may perform an electromyography to test how well the muscles and nerves are functioning. This test can include a nerve conduction study, which measures electrical activity in the nerves and muscles, or a needle exam, which records electric activity in the muscle fibers. An MRI of the brain and spinal cord can rule out other diagnoses, as can blood and urine tests and muscle biopsies.

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