Tissick

“Just a bit o' a tissick 'pon the chest,” said his father, after the child had ailed two days. “He'll be better come to-morrow if you keeps en in by the fire.” But that night poor Timmy grew worse, and, after daylight had gone, fear came upon his ...

Source: wiktionary

So careless of hisself as a child. ' Tis a bit of a tissick on the lungs, I reckon.

Source: wiktionary

He's ill with a tissick in his chest — got it cutting peat, my mother says. And he must see you this very day. Cussing Duchy, he is, and damning me and other good characters.

Source: wiktionary