Been through similar myself, collapsed when on holiday, doctor said blood pressure far too high and I'm heading for a heart attack or stroke, manager tells me to get a cert off the doc and stay off work, didn't want too but did as I was told, went back to work couple of weeks later, manager said still don't look good get another cert and stay off work, did that then he pulled me in front of HR, they tell me there's two reasons why people are off long term, "long term sick or long term skive and there's nothing wrong with you except a touch of catarrh", doctors don't know what they're talking about but HR do?? those that know me know how I struggle with the breathing on the slightest of gradients, don't trust the sods Mark and look after yourself
Roger