And if I—as I did—sit there going, “Yeah, I guess I should” but not doing anything, bring it to me and make me take it. I had to get to a place where I could turn on the light because the anxiety was worse in the dark. So I went in the living room and sat and he came in with me, brought me my inhaler (which I also needed), brought in my Epi-pen (generics) just in case, and waited until my mind began to clear enough to realize that yeah, I was in the middle of a bad reaction. Finally, the Benadryl calmed the itching enough for me to go back to bed. This morning, I woke late, foggy headed, and exhausted.
What happened? Histamine intolerance. Over the past year, it’s gotten worse and now, I count myself lucky when I can go a week without a reaction.
A number of you have seen me mention on Instagram, Twitter, Facebook, and here on the blog that I have histamine intolerance. But though I’ve talked about food allergies a lot, I haven’t gone much into this. Perhaps because it’s a rabbit hole that I wish I had never fallen into. But I think it’s important to talk about because it’s not always easy to find information on, and a number of websites have conflicting information. That’s because A—histamine intolerance isn’t fully recognized in the US yet (like many conditions), B—it affects each person differently. Together, these two factors make for a lot of confusion.
First: What is histamine and histamine intolerance?
Histamine is stored in mast cells (a type of white blood cell) in your body. It’s a chemical that tries to help your body get rid of something that’s irritating it: allergens, etc. Mast cells play an important part in your body. According to wikipedia (and I verified this): “Although best known for their role in allergy and anaphylaxis, mast cells play an important protective role as well, being intimately involved in wound healing, angiogenesis, immune tolerance, defense against pathogens, and blood–brain barrier function.” So histamine is a good thing. Until your body can’t process it right. This is a complex issue and here’s a good in-depth discussion of how this works.
Histamine intolerance manifests in a number of ways and the symptoms are numerous and include:
- Itching (of skin, eyes, scalp)
- Anxiety/Panic Attacks/Confusion/Fatigue
- Angioedema: Swelling of eyes, lips, throat
- Runny nose/watery eyes
- Irregular heart beat
- Low blood pressure
- Muscle aches/inflammation
- Allergies trigger an over-release of histamine based on one or more items you eat/come in contact with. (You’re IgE allergic to shrimp. You accidentally eat something with shrimp in it or that’s been contaminated with shrimp, boom—histamine dump that throws you into a reaction).
- Histamine intolerance builds up based on what you eat/come into contact with. So histamine intolerance is more of a balancing act—balancing the histamine in foods, with the histamines released during exercise, with the histamine released due to pollen, etc.. (You eat tomatoes and chocolate at lunch, you work out hard in the afternoon. Pollen count is high. Then you eat fish for dinner. You wake up in the middle of the night when histamine normally rises in the middle of a bad reaction).
One of the common ways to explain how this works is to use the ‘histamine bucket’ explanation. Take a look at the illustration. The “normal” histamine bucket can take a lot of histamine in it before there’s a problem. But when you have histamine intolerance, your ‘bucket’ holds a lot less. What would be a manageable amount of histamine for a person without HI, turns into a massive reactive mess for someone with HI.
So it’s a balancing act, and not easy to explain. I can’t just say “I can’t eat peanuts” or “oh, I’m allergic to dairy” anymore. Now, it’s “Well, I can’t have this/this/this and some days I can manage a little this but only if I don’t exercise and if I get enough sleep”…And frankly, my levels of sensitivity are sky high right now and I feel like I’m a walking histamine bomb.
Next time: What I can and can’t eat. How I manage my carb sensitivity with the need to watch histamine foods.