Medical writing is not just confined to writing a medical thesis or dissertation, but also includes writing an abstract, review article, medical manuscript, presentation and letter to editor. When you are working on original research, it becomes critical to start with a clear research problem and relevant study design. Medical writing also requires you to be open to ideas and work without biasness. One should also be receptive to critical feedback.
Further, it is important to adopt an ethical approach while writing. While you need to avoid mentioning anything unethical, you also need to protect the identities and clinical details of your subjects. While writing a paper, you should focus on backing up your ideas and arguments by strong evidences. Your work should be reliable and reproducible. It should also be clear and specific. Abstraction does not have much space in medical writing.
Your content needs to be meaningful and presented adequately. There should be an effective citation of related work by other researchers. There is no place for plagiarism and fabrication in medical or scientific writing. Thus, it is important to make your entire work unique and original. Finally, your work should be targeted on the right audience. It is not the same to write a medical research paper and a clinical report presentation.