ALS is a progressive neurodegenerative disorder involving primarily upper and lower motor neurons. The progressive loss in motor neurons leads to weakness, fatigue, spasticity, and loss of balance. Falls are reported in 30-35% of ALS patients prior to enrolment to ALS clinic. This early loss of balance may not be detected by the classical neurological exam, or the standard clinical balance scales. Understanding the impairments in the balance control system which leads to fall during the course of ALS is a prerequisite for the clinical decision-making process in order to develop a proper balance rehabilitation program and fall prevention strategies for these patients.