Your doctor will ask about your medical history, and do a physical exam to look for the following signs:
Your doctor will also check to see whether the following have been affected:
There is no single test result that confirms an ALS diagnosis. Your doctor will diagnose ALS based on the examination, and by excluding other causes of your symptoms.
Electromyography (EMG) tests how electrical signals travel down your nerves to your muscles. This test can be abnormal in ALS.
Because other neurological conditions besides ALS can cause similar symptoms, other types of studies sometimes are done to try to diagnose these other neurological conditions:
A neurologist is usually the physician who diagnoses ALS. A neurologist is an expert in diseases of the nervous system. If your doctor suspects ALS, he or she should refer you to a neurologist for evaluation.
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