History taking is a critical process for physicians to obtain useful information from patients to formulate diagnoses and provide medical care. It involves asking specific questions to gain information about a patient's chief complaint, history of present illness, past medical history, family history, and systems review. An accurate history obtained through good communication skills is important, as the diagnosis can often be determined from the history alone in about 70% of cases. The history should be taken in a structured manner, with open-ended questions to allow the patient to provide their full account before asking focused questions.