Physical therapy treats injuries and diseases using therapeutic exercise and other hands-on techniques that focus on alleviating pain and improving posture, strength, endurance, balance, coordination and joint mobility. Occupational therapy treats issues that arise from a disruption in a person's occupations. Occupation is everything that people do to occupy themselves, including taking care of personal needs, activities that allow one to enjoy life, achieving developmental milestones or work. Speech-language therapy addresses issues with communication, memory, problem solving, swallowing, sound production, stuttering and voice for all ages.