Playmates

Postural Orthostatic Tachycardia Syndrome (POTS) and Mast Cell Activation Syndrome (MCAS) are frequently playmates in a patient’s system. Their interaction can worsen symptoms and send patients through a maze of doctor visits trying to figure out what’s happening as their quality-of-life decreases.

When you get playdates like this going in your system (these are not the only chronic conditions that often occur together), diagnosis can be difficult and take weeks, months, or years. It’s not the kind of thing our diagnostic system is good at. And once you get a diagnosis, the only solution may be to manage the conditions.

Vignette of dice with shadow.

Have these? Want to scream? Yeah, I know. I’ve had two conversations this week with people who walk this tightrope all the time. It can be hard and exhausting. If you then meet resistance from health professionals when you request measures to avoid items that trigger a flare, it can be beyond frustrating. And, if you’re female, your concerns may be dismissed altogether.

None of this means you’re crazy. If you feel dizzy, you feel dizzy. If your right eyelid sometimes swells and feels heavy, it does. If you have rashes that will not go away even with prescription medications, there’s probably a trigger that’s causing a flare of some sort. If the room spins or you faint, it’s probably not all in your head. And yet, some physical reactions can stimulate emotional responses.

So what should you do?

Visit a physician. If you suspect you have POTS, MCAS, Ehlers-Danlos Syndrome, or Long COVID, search for physicians who specialize in these conditions. If there are none in your area and you have the ability to travel, visit one in another area.

If you can’t afford to travel, but have a medical school nearby, reach out to their research arm or see if you can get your case presented at grand rounds. The goal is to get more eyeballs on the problem.

Learn as much as you can. While it’s best to leave the diagnosing to the professionals, you are a part of your own health team. If you have information that you believe may help, it’s okay to provide that. If you have questions, ask them.

Visit the National Organization for Rare Disorders https://rarediseases.org/understanding-rare-disease/undiagnosed-diseases/

Check out The Dysautonomia Project https://thedysautonomiaproject.org/ for educational information on disorders of the autonomic nervous system.

See if the Autoimmune Association has relevant information. https://autoimmune.org/

But keep in mind that when two conditions coexist, diagnosis may be more difficult. https://www.eds.clinic/articles/eds-pots-mcas-trifecta

Follow dietary recommendations that can help. With MCAS, this means avoiding histamine containing and liberating foods. It may also mean avoiding certain medications and ingredients in personal care products. With other conditions, there will be different lists.

Talk to people. Find an existing community or compare notes if you run across someone else who experiences similar symptoms. People who are managing related conditions may be able to suggest triggers you have overlooked or symptoms that you thought were unrelated.

Finding a community that’s helpful can take some work and flexibility, but it’s rarely impossible. Stick your toe in the water and only wade in when you feel comfortable.

Establish a routine. Include eating at fairly regular intervals, drinking plenty of water, good sleep habits, and down time to let your system regroup.

Change what you can. If there are stressors you can let go of, do. A system that’s already overloaded will be more likely to have a lower threshold for triggers.

Trust yourself. I know when your gut is cramping and your vagus nerve has sent the room spinning, you may feel both sick and crazy. You are not. Something needs attention.

When something needs attention and you find yourself being summarily dismissed, you may need new playmates. A supportive community and a curious healthcare team can be just what the doctor ordered.

Not Exactly an Allergy

Even though your nose is running, your stomach churning, and your skin itching, you may be experiencing something that’s not exactly an allergy. It could be histamine intolerance.

Histamine Intolerance

Histamine intolerance, also known as enteral histaminosis, is a disorder that arises because of a body’s inability to degrade histamine due to diminished diamine oxidase (DAO) enzyme activity which leads to histamine accumulation in plasma and the appearance of adverse effects. That means when a person with histamine intolerance eats foods high in histamines (or that trigger their production) they’ll have an excess of histamine in their system just like they would if an allergic reaction triggered their body to release histamines. Unsurprisingly, the resulting symptoms are similar.

Symptoms

Symptoms of histamine intolerance include headache, dizziness, nasal congestion, sneezing, bloating, diarrhea, abdominal pain, nausea, itching, swelling, eczema, tachycardia, and hypotonia. The most common are gastrointestinal followed by dizziness, headaches, and palpitations, then respiratory and finally, dermatological. An Austrian study found an average of 11 symptoms per patient. That’s a lot of discomfort.

And while histamine intolerance may be causing a lot of unpleasantness, the lack of consensus for a diagnostic algorithm makes diagnosis a dicey proposition. Patients often end up seeing multiple physicians in an effort to get a diagnosis and treatment that will reduce symptoms.

Treatment

The primary strategy for treating histamine intolerance is to follow a low-histamine diet. Foods to avoid include spinach, eggplant, tomatoes, fermented foods, and meat or fish that is not fresh. It is also possible for papayas, kiwis, strawberries, pineapples, and plums to trigger the release of histamine so they should be consumed with caution.

DAO supplements have been proposed as an additional treatment. In Europe, regulations authorize a DAO supplement of enteric-coated porcine kidney protein extract to be marketed as food for special medical purposes.

More to Come

Multiple symptoms in multiple systems, a condition that’s difficult to diagnose, dietary treatment – these probably sound familiar to anyone with celiac disease. And it’s possible there is a connection. DAO activity increases progressively from the duodenum to the ileum and is located mainly in the intestinal villi. What is the effect when the villi become damaged from celiac disease?

Studies showing lessened DAO enzyme concentrations in untreated celiac patients vs those on a gluten-free diet could be an indicator that there is a relationship to be explored. Other connections to IBS and non-celiac gluten/wheat sensitivity (NCGWS) have been established. But studies of histamine intolerance are relatively new. We have much to learn and many connections to make.

In the meantime, if you suspect that histamine intolerance good be causing your allergy-like symptoms, keep a food/symptom diary. This will give you a written history to share with your physician. Don’t be afraid to ask whether they have considered histamine intolerance. You are a valuable part of your medical team.

Together with your doctor, you may develop a diagnostic plan that includes some of the following: skin-prick test; histamine elimination diet; analysis of blood, urine, and stool samples. Once a diagnosis is established, dietary change can eliminate most or all of the symptoms.

While a dietary change may not be your preference, fewer symptoms will bring you relief. And relief is what most of us are looking for even if what we have is not exactly an allergy.