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.
These cracks can be caused by a number of things. One common cause is Angular Cheilitis, a condition signified by painful sores at the corner and sometimes inside your mouth. This condition is either due to poor diet and lack of vitamins, or a fungal infection (and can be treated with an anti-fungal cream).