The rehab team is known for its participation after an event, such as injury or serious illness. However, as the trend toward preventative care continues to gain momentum, this role will continue to expand and change. For instance, physical, occupational, and speech therapists often work with patients who have suffered strokes. Medical social workers assist patients with emotional, financial, and social issues. Mental health counselors help with issues such as depression and mental illness, from day-to-day control to crisis intervention. Audiologists assess and treat hearing-related problems.