From the description: Chronic Migraine Mechanics For 5e is a set of rules and guidance to enable player characters to experience chronic migraines, which additional feats related to migraine experience and rules on deciding migraine occurrence and suggested side effects. Designed to allow players to explore real-world disability and experiences in a safe, controlled environment, Chronic Migraine Mechanics For 5E gives players and DMs to the tools to expand their in-game options and representation.