Guide To Primary Lateral Sclerosis Symptoms

Primary lateral sclerosis (PLS) is a motor neuron disease that occurs when the nerve cells in muscles slowly deteriorate. This leads to weakness in the voluntary muscles like the tongue, arms, and legs. Though the disease can occur regardless of age, it's most commonly seen in individuals between forty and sixty years old. There is a subtype that occurs in early childhood due to an abnormal gene passed from parent to child. Primary lateral sclerosis is less common than amyotrophic lateral sclerosis, commonly called ALS. It's often mistaken for ALS, but the symptoms progress more slowly. In the majority of cases, primary lateral sclerosis isn't fatal.