Patient compliance refers to the degree to which a patient correctly follows medical advice, including taking medications as prescribed, attending follow-up appointments, and making lifestyle changes. High levels of compliance can lead to better health outcomes, while low compliance may result in worsening conditions or complications. Factors influencing patient compliance include understanding the treatment plan, the complexity of medication regimens, and the patient’s beliefs about their health. Healthcare providers, such as doctors and nurses, play a crucial role in improving compliance by offering clear instructions, support, and encouragement to patients.