Is it normal, to have a severe salt allergy?

This is very hard for me to say, but here goes...

I have a severe salt allergy (sensitivity) as well as many other allergies. My allergy to salt didn't start until fall of last year. Before last fall, during the summer I had taken a trip to europe. I was just trying out a medication that was mainly for anxiety, but it also was a powerful anti-histamine. While, I was on that trip I had no little to no allergic reactions and at the time I could still have salt. I did however had a "mystery illness" during most of my stay there. It started out with leg pain and the day afterwards the pain was so intense that I had to beg for my travel mates to take me to a hospital. I went and I took a blood test which came back as normal. Over the next two weeks, my symptoms worsened. I had constant heart pangs, my shit was black, stomach pains, all forms of hallucinations (auditory, visual,etc) that were mild to severe, weakness, I felt like I was constantly moving and I could feel the ground underneath me shaking,etc. I had more symptoms but I can't remember them. Anyway, I felt like I was dying but eventually, the symptoms lessened towards the end of the trip and when I got home, I was fine... or so I thought.

Shortly, after I got home I started to have more allergic reactions to food. At a relative's suggestion, I stopped taking my benedryl and switched to the anxiety medication, Vistaril. My allergies didn't stop they only increased.... It got to the point where I could barely eat anything and to make matters worse, I had a ED relapse so my body was further weakened. I ended up having some severe allergic reactions that were so bad that I almost had to go to the ER. Eventually, I decided to eliminate certain foods in my diet to see what was causing the problem and in spring of this year, I realized that all arrows pointed to the salt. My immediate family acted very bad to my findings. My grandmother repeatedly called me a liar and blamed all of my recent health issues on me. She even went so far as to try to get me to stick some salt on my tongue, I ended up flipping out on her about how dangerous it was...

I cut salt and out of my diet that April and it's now September. In June, I had a psychical with my doctor and I desperately tried to tell her, but she ignored me and told me I had "food paranoia" so she forced me to get a blood test and everything I was tested for came back normal. By their standards I'm healthy, but I know for a fact that something is wrong with me.
I can't have any form of added salt in my diet unless it's Sodium Citrate. If I get anything else I'll have a severe allergic reaction: my throat swells, I can't swallow, lethargy, I can't breathe, my mouth swells and becomes tight like my throat, I get diarrhea or I'll vomit after I take a anti-histamine, I'll feel like there are "lumps" in my throat and I'm in pain. There are other symptoms which I unfortunately can't remember right now.

I really don't know what to do... I read somewhere that a allergy to salt can indicate a serious condition, but every time try to find out exactly what it could be I find only dead ends. I have so many questions that are in need for answers. I talked to others with salt sensitivities, but their cases weren't like mine. I can no longer travel or eat out anymore and I had to become a vegetarian... This has been making me very depressed, I don't want to die from this! Please don't say that I'm trolling because I'm not and I honestly can't fathom why anyone would lie about something as serious as this! Could the medication I was on cause this? Is is normal?!