This is the 19144th most frequent Korean word.
아팠다고도
"아팠다고도" means "also said (that someone) was sick/pained."
In this sentence, "아팠다고도" conveys that the person (friend) mentioned that they were ill in addition to other statements they may have made.
어제 친구가 너무 아팠다고도 했어.
Yesterday, my friend mentioned that they were also feeling very ill.
Here "아팠다고도" is used to express that the person is asserting an illness condition as part of their statement or argument, adding emphasis that this detail is noteworthy.
그는 심지어 그날 아팠다고도 주장했다.
He even claimed that he was ill on that day.
In this instance, "아팠다고도" suggests that as part of her communication, she confirmed experiencing illness, emphasizing that this too was conveyed.