Amyotrophic lateral sclerosis (ALS) is the most common adult motor neuron disease. It is characterized by both upper and lower motor neuron involvement. Electrodiagnostic testing helps to determine the physiological functioning of the nerves and muscles and also helps to monitor the progression of the disease. ALS is primarily an axonal disorder rather than a demyelinating one, distinguishing it from conditions like multiple sclerosis. Multidisciplinary management is essential, involving neurologists, physical and occupational therapists, speech-language pathologists, and palliative care specialists to optimize symptom control and quality of life. Ethical considerations include autonomy in decision-making, palliative care planning, and end-of-life care. ALS significantly impacts both patients and families, leading to physical decline, emotional distress, financial burden, and caregiver fatigue. This case explores the basic and clinical sciences of neuromuscular physiology through the presentation of a patient with ALS.