Talking to a brick wall symptoms and conditions

ok my brother was taking adderall for about 1 year I reali dont no what the milliagrams where but i do no they where orange pills not the capsuls.And about a month or so ago he actually said he thought he was having a heart attack so my g/ma took him to the hospital and the doc said it wasnt a heart attack but it was hypertentsion or something like that.Also if he started playin a game or anything it was like everything else disapeared.I swear when he was playin a game watching t.v or anything else it was like talking to a brick wall.He also was up for days and wouldnt eat anything he lost like 30pounds when he actually needed to gain 30 pounds to begin with.A couple of times he didnt take it and he would sleep and eat ALOT.But after he had his (what he thought heart attack) he quit taking it and it has been about 2 months now and i feel as if he is doing so much better now.The first month he was off it tho he as i mentioned earlier ate and sleep ALOT and had extrem mood swings.He was also very depressed. Was that from the adderall?