This course is intended to help the students to gain the basic knowledge and skills to deal with Medical Parasitology and Medical Entomology in the Kingdom of Saudi Arabia, therefore, should not be restricted only to endemic diseases but must be broad-based. It should include a reasonable amount of knowledge of the fundamental principles and factors which operate in the acquisition, establishment, and maintenance of different parasitic diseases. Furthermore, knowledge of the parasitic diseases prevalent in neighboring countries and to meet these diverse needs and conditions. The course given to medical students will emphasize several aspects of parasites (Helminthology, Protozoology, and Entomology) comprising: Geographical distribution, morphology, life cycle, pathogenesis, clinical picture, complication, diagnosis, treatment, prevention, and control. The student should be able to deal with different Parasitic diseases and their management.