LORELAI: I think I have gangrene.
RORY: You do not.
LORELAI: And vertigo.
Vertigo is a condition where the person affected has the sensation of movement even when standing still, feeling like a spinning or swaying movement. It may cause nausea, vomiting, sweating, or difficulty walking, and is the most common type of dizziness. It is usually caused by a problem with the inner ear.
It is often confused with acrophobia, or a fear of heights, which is what Lorelai is probably referring to – being on the roof has made her scared to get up there again. Also, she went up on the roof before breakfast, so any dizziness she experienced could have been due to low blood sugar. Or a caffeine rush …
This is possibly a nod to the 1958 psychological thriller Vertigo, directed by Alfred Hitchcock, and based on the 1954 mystery novel The Living and the Dead, by French writing team Boileau-Narcejac. James Stewart plays a police detective forced into early retirement by acrophobia and vertigo caused by an incident in the line of duty. He is hired by an acquaintance to follow his wife, played by Kim Novak, who is behaving strangely.
Vertigo received mixed reviews upon release, but is now seen as a classic Hitchcock film and one of his defining works. Attracting significant scholarly discussion, it is regarded as among the greatest films of all time, and by some as the greatest film of all time.