13 Early Warning Signs & Symptoms of ALS (Amyotrophic Lateral Sclerosis)

5. Cramps

Cramps, Symptoms of Amyotrophic Lateral Sclerosis

Muscle cramps are highly common in patients who have ALS, and their incidence increases as the disease progresses. These sustained involuntary contractions of the muscles are typically accompanied by palpable contractures, can last anywhere from 30 to 45 seconds, and tend to be extremely painful.

As a direct consequence of frequent muscle cramps, spasticity may develop if specific muscle groups are unable to relax sufficiently. Spasticity may hinder certain movements in which antagonistic muscle groups participate.