Pnin experiences acute chest pain, which he calls a seizure, after realizing he brought his student’s paper with him instead of his lecture notes (pgs. 19-25).
The text mentions that Pnin has had these panic attacks previously, on the dates (pg. 21):
- August 10, 1942
- February 15, 1937 (his birthday)
- May 18, 1929
- July 4, 1920
Pnin feels again the “extremely unpleasant and frightening cardiac sensation” after playing croquet with fellow Russian émigrés (pg. 131).