This movie type contains titles that explore the causes and/or effects of various diseases (heart disease, cancer, AIDS, STDs, Alzheimer's, Parkinson's, diabetes, etc.), illnesses (schizophrenia, depression, drug addiction, etc.), and disabilities (blindness, deafness, paralysis, retardation, learning disabilities, etc.) Titles may be instructional, helping the viewer understand the specific disorder and how to cure or control it, or they may examine one or more disorders in a social or historical context.