No problem Roof, 7d was a new word to me also, although, like you, the illness part of the word leapt out at me. Our posts crossed for 24a but that was the clue that gave me the most trouble, where I think Brendan deliberately put the clue just above 26a, where he refers to himself, so when I saw "setter" I fell right into his trap 'Brendan/setter trap! :-)