The tilt table and other tortures, I mean, tests

When I heard my new specialist did autonomic testing, I should have felt grateful. Many people with mast cell activation syndrome (MCAS) and Ehlers-Danlos syndrome (EDS) also struggle with dysautonomia, dysfunction of the autonomic nervous system. (See also: clusterfuck.) Despite being diagnosed with MCAS five years ago and having the symptoms of dysautonomia, no one referred me for testing.

To be honest, I was scared. While relaying your pee to your refrigerator for 24 hours for MCAS testing is exhausting, I’d heard too many stories about people fainting and vomiting during autonomic testing. While I was so dizzy in the first years of my MCAS diagnosis that I often crawled across my condo, I never actually passed out. Sometimes the fear of not knowing is worse than the experience.

I knew standing increased my blood pressure and made me feel terrible. When the pandemic began, the lines at grocery store deterred me from getting food. Luckily, I can now afford delivery, but some items are not available. If I have to go into a I store, I lean on a shopping cart to avoid losing my balance. After falling down the stairs several times, I stopped using them completely. (On more than one occasion, I’ve been asked if I avoid the stairs because my service dog is too short. Why is it so hard to accept invisible disabilities?!)

Tilt Table Test

Knowing fully well you may be minutes away from passing out or vomiting, the first task after being strapped to the Frankenstein table is to be totally calm to get a baseline reading of your vitals. After five years of MCAS and one epidural blood patch, I excel dissociating from my body. Super handy for medical procedures; not so great for processing emotion. (See also: reasons I need therapy.)

The goal of the tilt table is to measure your blood pressure and heart rate when you go from lying to standing. By using the table, instead of your muscles, we can better understand if the brain signals to the body are lagging. 

“Okay you ready?” the doctor asked. I nodded and she pushed the button. The table motor chugged as it hoisted me up to 70 degrees. I braced for the worst.

As the table stopped rising, the pull of gravity took over. Within that split second, I decided:


What I remember is the heaviness of my body and the doctor’s incessant questioning. I felt like I was wearing a Kevlar suit and about to be sucked through the ground. I decided I would fight the tilt table with deep breathing and calm thoughts. As everything became quiet, dark, and slow, I tried to focus my eyes on a spot on the carpet like they teach you in yoga to keep your balance. Same thing, right?

What actually happened was documented by video. The doctor asked, “How are you doing?”

I responded, “Good.”


“Any dizziness?” she asked.

“No, I just feel super heavy,” I said.


“Any headache?” she asked.

“Super, super heavy,” I groaned.


Instead of speaking my mind, I politely closed my eyes. 

Within a few minutes, the pressure subsided and I just felt weak. 

After 10 minutes, the doctor lowered the table and asked, “How are you feeling?”

“My legs are all tingly,” I said. “There’s pain in my muscles.” Then I realized the pain was the blood rushing back into my legs. They had been numb the whole time I was standing. 

As my doctor calculated the results, I recall all the times I had a heavy feeling. I described it in 2018 as almost a paralysis.

“Your heart rate did not jump. This is not a diagnosis of POTS,” my doctor explained. “What we are finding is you had an adrenergic response meaning your blood pressure jumped and you were symptomatic.”

Although I expected the blood pressure rise, I was surprised my heart rate stayed normal. The doctor explained that my results supported the evidence that when I am triggered, my body maintains the reaction. In other words, I get stuck in flight or flight. 


“So we’ve got three more tests,“ she said.

“Cool,” I lied.

Deep Breathing Test

When my specialist explained the deep breathing test, breathing in and out deeply for one minute with the help of a computer screen, I was like:


I was feeling pretty confident after surviving the tilt table. While my deep breathing performance was perfection and my heart rate was normal, my mast cells protested.

“I’m cold,” I interrupted the doctor’s explanation.

“Like suddenly cold?” she said.

“Yes,” I said.

She retrieved a blanket.

“My chest hurts,” I said, remembering that bronchospasms can often feel like a heart attack.

“This test is like blowing up a teeny, tiny balloon,” my doctor explained. “So, you know how much pressure you have to put on a teeny, tiny balloon?”

“Yeah, until my jaw pops out,” I replied.


Luckily, my jaw did not pop and my CSF blood patch did not blow, but honestly, this was my least favorite test because worried about my Ehlers-Danlos syndrome (EDS) complications. My results showed a slightly delayed sympathetic response, unlike my tilt table test. Perhaps, my body was starting to wear out from testing. This test triggered a wicked headache that built for 12 hours.

Quantitative Sudomotor Axon Reflex Test (QSART)

After the surviving the tilt table, a little electricity didn’t fluster me at all. Four small plastic cups were taped to forearm, foot, and leg to measure amounts of sweat, or sympathetic response, generated by a mild electrical current. Sympathetic nervous system

“It does feel a little prickly, but I think you’ll be fine,” my doctor said. “How are you feeling?”

“Prickly,” I said.

“Maybe that’s an understatement,” she said.

“Yep,” I said.


For me, this test was tolerable, not really any worse than a MCAS skin reaction. My sweat was slightly low in a few places. No surprise, as I often skip my deodorant stick with no repercussions. 

As barbaric as these tests may sound, I am now very grateful I was able to access them. 

My doctor diagnosed me with hyperadrenergic dysautonomia. Is it possible I had POTS, another type of dysautonomia, at one time? Very likely. The tests can inform treatment and further testing, but just like MCAS testing, the results can change over time and treatment still requires trial and error. I also tested negative for small fiber neuropathy (think tiny melon ball-like scoops of skin). 

I’m looking forward to sharing my major improvements on new treatments– not beta blockers, which can exacerbate mast cell reactions. Aside from treatment, there’s a lot of value in a formal diagnosis for other providers to understand my body’s reactions and to support disability accommodations. For example, one doctor was so obsessed with my high blood pressure that she dismissed my CSF leak. Now I can explain my hyperadrenergic response.

After my long day of autonomic testing, my friend asked, “Do you want to go out and celebrate?”

“Yes,” I said, suffering from one of the worst migraines of my life.


Keeya at Seattle waterfront

May 2021 Update

MCAS remission eliminated my dysautonomia symptoms completely. Dr. Weinstock estimates MCAS accounts for 1/3 of POTS cases. While autonomic testing helped me understand dysautonomia, pursuing MCAS treatment was a better use of my resources.

13 thoughts on “The tilt table and other tortures, I mean, tests

  1. So interesting. Makes me glad I declined the beta blockers to treat my headaches/ migrations years ago before my EDS diagnosis. Gorgeous dress in your photo!

  2. I’m so glad to hear your test results are leading you in the right direction. The tilt table was one of the worst experiences of my life…I vomited, passed out, was yelled at for closing my eyes, and then was told that the symptoms were due to the vasodilator (that they administered).
    Thank you so much for sharing your story! I so grateful to have discovered you… a severe illness six years ago triggered all kinds of systemic issues, and after years of ruling things out, MCAS and ALPS and diagnoses look promising. It’s so reassuring to have a resource. 🙂

  3. Omg!! Thank you! Thank you! Thank you! I think I’m general for just getting more awareness out there. My 14 year old daughter has been going thru absolute hell for about 2 years with MCAS, POTS, dysautonomia, gastroparesis, eds, and the medical field has such a long way to go with diagnosis, testing, and treatment. I love each and every story I read that helps spread awareness. It helps so very much to know….we are not alone. ❤

    1. My daughter is almost 16 and spent most of 2.5 years in bed! Nobody would listen to me about MCAS until about doctor 35! By supposedly accident I gave my daughter 2 24 hour Allegra and her usual Pepcid. In a month my daughter was able to go on vacation. Yes she crashed afterwards but still! The old doctor told me he never told me 2 24hour Allegra. So I took her off and backed down to 1. Sick kid again! Hmmm..
      So doctor 35 put her back on 2 Allegra and upped her Pepcid. She is getting better! Next stop..Xolair!
      Dont stop parents! You know your kids!
      Next stop for me…I’m writing Ellen!

  4. Every Dr I turn to thinks I merely have panic disorder. How do you suggest I get someone to listen? My Allergist said it sounds like Dysautonomia but that’s “above her pay grade”.
    Thanks for your tour through hell so to speak.

  5. Hi!

    You mentioned you were planning to share treatments that are not beta blockers. If you have a moment / energy could you expand on that?

    I’ve recently basically got the symptoms of POTS and probably have MCAS. I’m in a catch 22 though. Beta blocker seems to be fast acting / helping me a greatly to get out of bed and live life. But I get rash from them after only 1 dose, so I can’t keep taking them and need something fast acting.

    Thank you so much for sharing your story.

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