Walk-in clinics are healthcare facilities that provide immediate medical care without the need for an appointment. They are often staffed by nurse practitioners, physician assistants, or doctors and are designed to treat minor illnesses and injuries, such as colds, sprains, and infections. These clinics are typically open during extended hours, making them a convenient option for patients who need quick attention. Patients can visit walk-in clinics for routine services like vaccinations, physical exams, and health screenings. They are usually located in community areas, such as shopping centers or pharmacies, and offer a cost-effective alternative to emergency rooms for non-life-threatening conditions.