Pediatric patient data is essential for several reasons. Firstly, it helps in tracking the growth and development of a child, ensuring they meet developmental milestones. Secondly, it aids in diagnosing and managing acute and chronic illnesses. Thirdly, it is vital for preventive care, such as ensuring children receive their vaccinations on time. Lastly, having a detailed medical history can be invaluable in emergencies when quick decisions are needed.