At the beginning of the episode, when Alan is using the frozen peas to cool his chest, an abdominal T-shaped scar is visible. In 1987, Jon Cryer had a rare form of skin cancer on his stomach called dermatofibrosarcoma protuberans that needed to be surgically removed. It left him with a large scar.
This episode won 2 Emmy Awards for Outstanding Multi-Camera Picture Editing for a Series and Outstanding Cinematography for a Multi-Camera Series.
Episode title spoken three separate times, as opposed to the usual once: by the police dispatcher, twice, and Alan (to himself), once.
Alan (Jon Cryer) tells the doctor that Charlie (Charlie Sheen) is two years older than him. In real life, Jon Cryer is five months older than Charlie Sheen.