What episode is it where House is ill and in a hospital bed? If so is this the one where he also collapses?

There are quite a few times House is in a hospital bed.

In A Hospital Bed:
1) Three Stories 1x21
2) No Reason 2x24
3) 97 Seconds 4x03
4) You Don't Want To Know 4x08 (not really a hospital bed though)
5) Wilson's Heart 4x16

Collapses:
1) No Reason 2x24
2) 97 Seconds 4x03
3) You Don't Want To Know 4x08
4) House's Head 4x15
5) Birthmarks 5x04

I think that's about it.
Hope it helped (:

Um not entirely sure what episode you are talking about because House is in a hospital bed quite often but the only time I think of him being sick is in "Three Stories". But he did not collaspe in that episode.

You might also mean "Wilson's Heart".

I hope that helps.

it is season 2 episode -no reason when he gets shot twice and he also tares his stitches when he is talking to a lady.

2 part final of 4th season