A fishbone diagram is a problem-solving method that employs a fish-shaped diagram to depict potential root causes of problems and troubleshoot potential solutions. It is also known as an Ishikawa diagram (after its designer, Kaoru Ishikawa), a herringbone diagram, or a cause-and-effect diagram. Fishbone diagrams are frequently used in root cause analysis to troubleshoot quality management or product development challenges. They are also utilized in nursing and healthcare, as well as a brainstorming and mind-mapping tool that many students find useful.