What is CASC? The Certified Administrator Surgery Center (CASC) credential is a distinction earned by those in the ASC industry with a comprehensive understanding of the knowledge and skills that the role of an ASC administrator requires. The Board of Ambulatory Surgery Certification (BASC) is the organization that administers the CASC exam.
1 Tender, red splits or cracks at the corner of your mouth (angular cheilitis), which can be caused by infection, a diet too low in vitamins, and over-closure of the mouth in someone who has been without teeth or dentures for some time.  Chapped lips, which may be caused by dry, windy, cold, or very hot weather.
People get in the corners of their mouth called cold sores.... There are painful bumps many people get in the corners of their mouth called cold sores. This is caused by a virus. You can get it checked out by your family doctor, but in the meantime, you can apply ice to the sore for relief from pain. You can go to the following site to read up on this more: