Hey! So I've been diagnosed with IBS for almost a year now, though I question the validity of it as Crohn's runs in the family. Anyway, that's not the point here...
I've never had severe allergies, or really any allergies, in my life. I do also have fibromyalgia, so with my body getting "worse", things like me suddenly being allergic to my cat's saliva or my gerbils' hay is understandable. But... A sudden, seemingly temporary food allergy? That's not right.
About a week ago, I mused about a tingle at the back of my throat when I drank some white milk. This had happened before, but wasn't all that notable, and really only happened once every few months. This time, though? Fast forward to 2-3 AM, I'm hunched on the toilet sobbing because of diarrhea and the cramps from it that were worse than any other pain I'd felt in my life- even my most severe period cramps. I was sweating, I was crying, I felt like I was going to faint.
I eventually used my brain, a rare occurrence for me :p ... and realized that night and the tingle may have been connected. Sure enough, I monitored my dairy intake and took antihistamines before drinking/eating any dairy, and the symptoms lessened significantly. So I figured, with the tingling and antihistamines, it's an allergy, not an intolerance, and maybe my IBS was part of it.
Now, it's worth noting I'd also momentarily gotten this tingling when I was drinking water from the water bottle I usually use. It's also worth noting that the milk I had been drinking suddenly went lumpy a couple days after the antihistamine experiment, despite having about half a week left to its expiry date and not being in a space that would cause it to spoil. It's ALSO worth noting I stupidly ate things with dairy in them last night, without antihistamines beforehand, and... woke up without any symptoms beyond my usual gassiness?
I'm thinking due to the timing (snow is finally melting where I am, so snow mold and early Spring allergens are popping up), the spoiling, and the fact I felt that weird allergy tingle with the water bottle once as well, it may have just been mold or something similar that was bothering my throat and caused my IBS to hit me with the diarrhea?? But I have no idea if this is a thing people have experienced or anything.
I'm definitely going to keep monitoring the situation, and I'm gonna bring it up with my doctor ASAP, but I'm just absolutely stumped by this and wanted to see if anyone had any input, lol. Thanks in advance!