An asthma action plan is a written document that outlines how to manage asthma symptoms and attacks. It includes information on daily management, such as medications and triggers, as well as steps to take during an asthma attack. The plan is personalized for each individual, based on their specific needs and asthma severity. The action plan typically includes three zones: green, yellow, and red. The green zone indicates good control, the yellow zone signals caution and possible worsening symptoms, and the red zone requires immediate medical attention. Following this plan helps individuals manage their asthma effectively and reduce the risk of severe attacks.