A physical disability is a condition that limits one or more aspects of a person's mobility, strength, flexibility, or dexterity. This can be due to a variety of causes such as birth defects, injuries, illnesses, or aging. Physical disabilities may affect a person's ability to perform daily activities and navigate their environment independently. They can range in severity from mild to severe, and may require the use of assistive devices, therapies, or accommodations to help individuals with physical disabilities live full and independent lives.