Early-stage ALS (Amyotrophic Lateral Sclerosis) patients often experience leg pain symptoms. ALS is generally caused by factors such as inflammatory reactions, genetic factors, neuronal apoptosis, infection, autoimmunity, and metal poisoning. These factors may lead to the degenerative death of nerve cells, causing muscle atrophy, muscle weakness, fasciculations, increased muscle tone, hyperactive tendon reflexes, and symptoms of muscle fatigue, muscle tension, and muscle pain. In the early stages of ALS, muscle fatigue can occur after activity due to lactic acid not being properly expelled, leading to muscle pain. Treatments such as acupuncture, physiotherapy, and massage can be administered to alleviate these symptoms.