Also known as: Obliterative bronchiolitis
Kirk, a 17-year-old patient who has been fighting this condition since age 12, experiences respiratory arrest and declining lung function. The episode centers on the conflict between Kirk's wish to stop treatment and his father Charlie's desire to keep fighting, ultimately leading to Kirk's death.
Also known as: Incest/sibling relationship
A married couple who discovered through genetic testing that they are biological siblings due to the same sperm donor being used for both their mothers. Lisa seeks a tubal ligation to remain with Brian, but the relationship ultimately ends when she learns Brian knew they were siblings before marriage.
Also known as: Head and body lice
Cooper contracts head lice from treating pediatric patients at a health fair, requiring Violet to pick the lice from his hair in a scene where he confesses his secret relationship with Charlotte.