Sequela: A pathological condition resulting from a prior disease, injury, or attack. As for example, a sequela of polio. Verbatim from the Latin "sequela" (meaning sequel). Plural: sequelae. From Healthy Resources How IL Inhibitors Work to Treat PsoriasisModerate to Severe UC: Targeted SolutionsExpert Insight on a New Treatment for C3G Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew