Up to 1964 Ramanujam's lack of belief in his own abilities could have been described as part of his personality, but in 1964 he was struck with an illness which was diagnosed as severe depression and schizophrenia.
Hanggang sa 1964 Ramanujam ng kakulangan ng paniniwala sa kanyang sariling kakayahan ay ay inilarawan bilang bahagi ng kanyang pagkatao, ngunit sa 1964 siya ay Struck na may isang sakit na kung saan ay na-diagnosed na tulad ng matinding kapighatian at skisoprenya.