Anxiety Disorders: What You Need to Know. Most people experience feelings of anxiety before an important event such as a big exam, business presentation or first date. Anxiety disorders, however, are illnesses that cause people to feel frightened, distressed and uneasy for no apparent reason.
A+ | Reset | A-. An epidural steroid injection (ESI) is a minimally invasive procedure that can help relieve neck, arm, back, and leg pain caused by inflamed spinal nerves.
FSI stands forâFuel Stratified Injection,â TSI foâTurbo Stratified Injection.â Both of these initialisms apply to engines r. with Volkswagen Audi Groupâs direct fuel injection technology. These engines feature highly pressurized fuel in a common rail.