Medical writing involves clearly communicating clinical and scientific data in written form for various audiences. A medical writer uses their understanding of science and medical subjects combined with strong writing skills to present information at an appropriate level for the target reader. There are many types of medical writing including scientific, regulatory, medico-marketing, consumer, social media, and e-learning. To be a successful medical writer requires qualities like attention to detail, strong research abilities, effective communication skills, and a willingness to continuously learn. Following a four step writing process of prewriting, drafting, revising, and refining can help medical writers produce error-free documents that meet readers' needs.