article_snippet.sent: , I was on the floor struggling to get air into my lungs. '
article_snippet.sent: Thankfully, I stopped the exercising straight away and my breathing slowed, but I was left feeling quite sick for a few days afterwards.'
article_snippet.sent: On another occasion, Mrs Armitage was forced to sit on the floor, gasping for breath in the middle of Leeds' White Rose shopping centre after a reaction was triggered by simply walking up a flight of stairs.
article_snippet.sent: Mrs Armitage said: 'The two worst episodes I've had have been after no more than five minutes – the equivalent to a warm up.
article_snippet.sent: I've had to rule out exercise completely now, it's just too much of a worry.'