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.
How to Spot It. Canker sores appear as round ulcers, and can develop on the linings of the cheeks and lips, the tongue or at the base of the gumline. Certain foods that are hot, citrus, acidic or spicy in nature can cause these ulcers to become more painful and, as a result, more pronounced.