This document provides an overview of artificial intelligence in healthcare. It discusses applications such as medical imaging analysis, drug discovery, clinical decision support systems, and healthcare chatbots. The advantages of AI include enhanced diagnostic accuracy, personalized treatment plans, and increased efficiency. Challenges involve data privacy concerns, regulatory issues, and potential bias. Existing techniques used are machine learning, deep learning and natural language processing. The future of AI in healthcare is poised to include personalized medicine, augmented/virtual reality, and remote monitoring through telemedicine.