DS15, been off school since Weds - sudden onset of lack of energy, lethargy, dizziness, feels permanently "empty", struggling to get enough air in his lungs, its accompanied by some anxiety - I think health anxiety- which makes his breathing worse and he gets panicky about it. GP thinks its stress - not keen to do blood tests after just one of two days, although we have had much less severe episodes like this a few times in the last year or so.
Diet is OK and appetite is good. He's never ill so this is unusual.
Any similar experiences / advice?