What the What?

I've eaten pineapple all my life. Now when I eat it, I feel like I'm bring electrocuted down my spine so I stopped eating it. I asked three different doctors one told me it was a tumor (it wasn't) the second told me it's all in my head see a psychiatrist. The third doctor told me he just had no idea he had never seen it before. Has anyone ever experienced this or something like this?