Common types of UC include: 1  proctosigmoiditis, which affects the rectum and lower portion of the colon. 2  left-sided colitis, which affects the left side of the colon beginning at the rectum.  total colitis, which affects the entire large intestine.
Vasovagal syncope. Vasovagal syncope is a sudden loss of consciousness mediated by the vagus nerve. It occurs when the vagus nerve is overreactive to certain triggers, such as the sight of blood or extreme emotional distress, and causes a sudden drop in blood pressure.
If this is not sufficient in vasovagal syncope medications like midodrine or fludrocortisone may be tried. Occasionally a cardiac pacemaker may be used. Reflex syncope affects at least 1 per 1,000 people a year. It is the most common type of syncope, making up more than 50% of all cases.