Hi there! Just wanted to ask you about y husbands symptoms - he has been having periodically not constantly, but about once every 2-3 months sudden nausea feelings and blurred vision, they dont last long, but when he actually throws up, he says it is very acidic. It's very hard to convince him to go see a doctor, but I worry about him and want to make sure he is well. Any thoughts what can cause this?? Thank you in advance!