My 24 yr.old son started to vomit March 16th this year. He eats and it comes right back up. The same with any liquids other than Mountain Dew (pop) or we just found out, apple juice. He was taking Ultram, His Dr. thought this was the problem.It was discontinued 2 weeks ago. He is still vomiting. He takes Vicodin (headaches, he rolled a jeep in Sept. of 2007), he also takes Zanaflex for the headaches.When he was younger (8, I think), he was diagnosed with GERD from a nasal ph sensor, and used Propulsid. He has only had 2 BM's in the last 6 weeks also. He said he thought they looked normal. I have taken him to 2 different E.R.'s because I am seriously worried. He had blood tests done about 2 weeks ago. All I could see was a low TSH. At the first E.R., they checked his urine and said he had a UTI and gave him doxycycline. Told him to take Prilosec for 2 weeks, get Citrate of Magnesia and use it and also gave him an RX for Phenergan. They also did a test to culture his urethra saying he may have an STD (gonorrhea or chlamydia!). This is confusing to us (and him).They also gave him a "gastric cocktail" after having him let a tablet dissolve on his tongue (I don't remember what this was but might if I heard it again). This did no good. Friday I took him to another E.R. and the Dr. thought we were lying! He said if you haven't eaten in 6 weeks, you should be dead! They took his blood and said he did not have the UTI (he used the medication 3 days), no STD's, no infections, he wasn't dehydrated (they had done a urinalysis and it said he was), but did have low potassium and gave him 4 pills with apple juice (how we knew he could take it and not vomit). They did an x-ray and said it looked normal, no stomach problems, no intestinal problems, no blockages or stuff in it, no tape worm (apparently, we live in the wrong area [Colorado]). He has not had any surgeries in well over 8 years (adenoids, tonsils, deviated septum, turbinates reduced). He has lost over 70 pounds. He used to weigh 305 and now weighs 240. I realize being less fat is good, but this doesn't seem to be the way to lose it. He smokes a half pack a day I think he said. He doesn't do any form of non-prescribed drugs (except OTC's for headaches) other than alcohol socially (a beer once a month usually). All I have noticed is he feels way too full after eating (even if it is just one cracker) and he starts to burp a few times, then, up it comes. He says he doesn't feel nauseous or anything else, it just happens. The only other thing I notice is that his teeth are bad from the acid reflux (dentist says this) and he wears a tongue piercing and lip piercing. What should I do (or him, I mean)? I am very fearful for him and do not know what to think or what happened or is happening to him.