https://dictionary.cambridge.org/dictionary/english/lurgy
lurgy - noun [S] UK humorous
uk /ˈlɜː.ɡi/ us /ˈlɝː.ɡi/
an illness or disease, especially one that is not serious
- He's got the dreaded lurgy.
(según Google, según Oxford)
mid 18th century (in English dialect use, in the sense ‘laziness, regarded humorously as a medical condition’): the current use dates from the 1940s and was popularized by the British radio series The Goon Show.
(Supongo que suena similar a "allergy", pero en inglés nunca se sabe.)