A bit of background. DS (16) has been having dizzy spells for a while now and they seem to be getting worse. He will become dizzy, his breathing becomes laboured and he gets chest pains. If I'm honest, it looks like a panic attack. However DS is naturally not a worrier and they don't seem to be brought on by anxiety. We have been going to the GP to get to the bottom of it since the beginning of the year. I cant fault the GP as she's been brilliant.
DS went for an ecg back in March, which showed a slight problem? We were told it was probably nothing and just down to DSs build. As a precaution the GP asked for a second opinion from the cardiologist. Next thing we know, DS had to have an echocardiogram. I really wasn't worried at this point, I just thought they wanted to rule things out.
When we went back for the results GP said the echo identified that DS's heart muscles were weak. She had spoken to a cardiologist who recommended an MRI scan. She also told DS to take it easy and don't take part in vigorous exercise.
So when we turned up for our appointment which we thought was for an MRI, we find out we were just there to see a Cardiologist. He asked us for a brief history and decided that he wanted to start again from the beginning as from what results he could see, he didn't think DS had a heart condition 
but did think it needed investigating. He told DS he could exercise and to carry on like normal. He sent him home with a portable heart machine on to record any symptoms. That was 4 weeks ago and we haven't heard anything back.
So for the past week DS has been at a cadet camp. The camp was for higher level cadets and was physically tough. DS took a letter with him from myself explaining that he was undergoing tests but was okay to carry on as normal. During the week, DS has had at least ten attacks, which is way more than normal. Twice the instructions took his to hospital because he was taking a long time to recover. The hospital were happy to let him return to camp as DS was determined to carry on and finish the course. On the way home yesterday, DS had another attack on the minibus and he momentarily blacked out.
He is supposed to be going on another cadet trip in a weeks time for ten days. I can't get an appointment with his GP next week and we still haven't heard from the last hospital appointment. So do you think it would be unreasonable to take him to A&E and see if we can get some answers? I'm not convinced that he doesn't have a heart condition. The Echo results obviously showed there was something going on and the NHS website says panic attack type symptoms can manifest in some heart conditions. I really need some peace of mind before sending him off to another camp.
Sorry for the long post, I didn't want to drip feed.