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.
This makes it easier to upgrade engine designs for use with injection rather than carburetion, but there is a lack of improved fuel efficiency. Multi-point injection (MPI) systems inject fuel at each cylinder, allowing much greater control over how much fuel the engine burns. In MPI systems, the injection generally takes place directly inside the cylinder's intake valve. Depending on how the injection is handled, MPI systems fall into several types.