Case reports remain to be an essential part of knowledge generation in health care. It is a research design that involves writing about a patient’s illness with either an unusual, new, unexpected, or unique characteristic. It can be about new findings, a novel diagnostic test, unfamiliar adverse events or innovative medical and surgical interventions. It is a detailed description of a patient’s course of illness including symptoms, physical examination findings, laboratory results, treatment modalities and outcomes. The essential element of writing a case report or series is to contribute to the generation of new knowledge. Wellwritten manuscripts have a valuable purpose in medicine as they present new illness, unexpected effects of treatment, novel diagnostic exams or unforeseen patients’ outcomes. The sections of a case report include an Abstract, Introduction or Background, Case Presentation [history, physical examinations, investigations or laboratories, differential diagnosis (if relevant), treatment (if relevant), outcome/follow-up, Discussion, Learning points/Take home messages, Patients perspectives and References. Manuscripts written as case reports or case series by nature of their design are not required to get approval from an Ethics Review Board (ERB). However, there should be an institutional process to clear and register papers. Case reports or a case series has its own distinctive writing components and features as not all single or series of clinical cases are reportable. This article aimed to define case reports/series, describe the different parts, how to write and evaluate a case report manuscript using the CARE guidelines.