My husband has a weird stomach problem that no Dr. can seem to diagnose. Can anyone relate???

Okay. At first it just looks like acid-reflux, but its more like compulsive vomiting throughout the day. He can control the compulsion to some degree, and manages to not loose all of his nutrition. However, the stomach Acid is damaging his esophegus (sp?). He has been tested for Celiac Spru, Stomach Paralysis, and he's not allergic to meat or dairy. He doesn't smoke, drink coffee or eat acidic foods. It can happen 5-10 times a day before or after meals and also between meals altogether. If you have anything like these symptoms or have a guess as to what is the culprit, please drop me an email. Also, one more strange thing is that all throughout his childhood he would compulsively eat plain table salt. I have heard that this was indicitive of a metabolic disorder, but I can't find out anything more about it.
Additional Details
1 day ago
No, he has not had a colonoscopy. He has had an endoscopy and some sort of digestion test, where he drank radioactive stuff and then they watched him digest it. Both showed nothing.
Its hard to answer the question about his current symptoms because he tries very hard to prevent himself from actually throwing up . With a lot of concentration and relaxation, he is able to not loose his food-so its kind of like heaving but he is usually successful at keeping the food inside and not out. When it does occasionally come out its kind of whiteish. it doesn't seem to be associated with any specific time of day (although without fail first thing in the morning he has it). like i said before, it can be bore meals, right after a meal, when he's really hungry, when he's not, etc. However, it doesn't seem to affect his appetite at all. He eats many times a day, though on days where is stomach is worse, his portions are smaller. He hasn't had any head trauma, headaches, or really any other problems.
1 day ago
He takes asprin very rarely, and we drink alcohol (within moderation) a few times a week. However, in Nov. he got mono and didn't have a drop of alcohol for 3 months-symptoms of stomach problem did not change. He hasn't had any of these probelms:kidney-liver-disease ?
gall stones ?
headache ?
head trauma?
diabetes?
abdominal surgery ?
no results from any blood tests done so far. no pain, fever, diarrhea, constipation. he doesn't feel thirst, fait, or have dry mouth. But one of his biggest ways of easing his stomach just a bit is to drink ice water. so he drinks probobly 2ce the amount of water that most people due.
oh-and its been a problem for the majority of his life - he's 23. And his Dad has always had a wierd stomach problem. Whenever his dad wouldn't get enough sleep at night - we would vomit and feel tsick the next day. ---just a side note.

I know this is really off the wall, but if I were him, I would have a TB test done.!!! TB is on a big comeback, can present these symptoms in rare cases. US doctors are NOT used to seeing TB, so often miss the diagnosis for years, long after the damage is done. This is NOT something to play with, for many stomach infections can leave perminent scarring, and if an artery ruptures, he can bleed to death in a matter of minutes and never know it. Get a TB test done immediately. IT costs little, and hopefully, it will be negative. A Positive TB test does NOT mean that is what it is, but it is an indication that further tests need to be done immediately. You would be better off with a foreign doctor who is used to seeing "wierd" symptoms daily. Good luck

Just a guess try a stress test (psych)

A friend had something similiar- she used peppermint oil and got some relief. She took in some of the vomit from morning and a sample from the afternoon. When you collect it put in a ziplock and refrigerate or freeze, so when you do get an appt. If you have not asked already- see if there is blockage or swelling from the stomach to the intestines, if food can not be processed and passed..your body will eliminate it any way it can. Hope this helps....good luck

He needs to see psych. Was he sexually abused as a child?

You said there was no results with the blood work? If so then he probably doesn't have kidney disease- or it could be in the early stages. I have chronic kidney failure and the night I went into hospital I had compulsive vomiting and I also have acid reflux. Is he overweight? The blood work will check for protein in the urine and for the keratin level. He might need to see a neuphrologist.