Electromyography (EMG) is a diagnostic test that measures the electrical activity of muscles and nerves. By placing electrodes on the skin or inserting fine needles into the muscles, EMG evaluates muscle function and nerve conduction. This test is crucial for diagnosing neuromuscular disorders, such as carpal tunnel syndrome, muscular dystrophy, and peripheral neuropathy. EMG helps determine the cause of muscle weakness, pain, or numbness, guiding effective treatment plans. Patients should opt for EMG if they experience unexplained muscle weakness, cramping, or numbness.