International Journal of Academic Information Systems Research (IJAISR)   Year: 2021 | Volume: 5 | Issue: 5 | Page No.: 1-1 An Expert System for Diagnosing Facial-Swelling Using CLIPS Mohammed A. Alkahlout, Azmi H. Alsaqqa, Tanseem N. Abu-Jamie, Samy S. Abu-Naser Abstract: Background: Face swelling is the enlargement or distention of the face due to fluid buildup or inflammation in the facial tissues. Swelling can occur anywhere on the face, but it is most noticeable on the lips, cheeks and eyelids. Swelling can also extend to the neck region. Facial swelling may also be referred to as facial edema[1]. Objectives: The main goal of this expert system is to get the appropriate diagnosis of disease and the correct treatment by presenting suggestions on Facial-Swelling disease to the user by asking about symptoms.. Methods: In this paper, we proposed an expert system that was designed and implemented to help doctor and user to diagnose some Facial-Swelling diseases. An overview of Facial-Swelling diseases is presented; the cause of diseases is determined and treats of the disease whenever possible. CLIPS and Delphi languages were used as the main tools for designing our expert system.