Teenage Girl Who Is Allergic to Almost Everything: ‘I Want My Old Life Back’

CAITLIN KEATING December 26, 2018 08:30 AM

Fifteen-year-old McKenze Messman was living every teenager’s dream during the summer of 2015. The soon-to-be freshman at Waverly High School in Waverly, Nebraska, was spending her days at the pool, waterskiing on nearby Johnson Lake, and going to cheerleading practice three times a week after landing a spot on the varsity team.

“I was having so much fun,” McKenze, now 17, tells PEOPLE in this week’s issue out Friday. “I couldn’t wait for what was next.”

But just three days into the school year, life as McKenze knew it would never be the same. What started off as small allergic reactions that would send her to the nurse’s office, soon turned severe and life-threatening. During the next three weeks, she went into anaphylactic shock seven times and was rushed to the emergency room.

After months of testing, she was finally given a diagnosis: Mast Cell Activation Syndrome, an incurable condition where mast cells in her immune system malfunction, causing her body to have extreme allergic-like reactions to a range of outside triggers.

“I’m basically allergic to everything,” says McKenze, who was subsequently diagnosed with two more disorders, Ehlers-Danlos Syndrome (EDS) and Postural Orthostatic Tachycardia Syndrome, after numerous doctor’s appointments and a 10-day stay at the Mayo Clinic in Rochester, Minnesota.

Watch the full episode of People Features — McKezne Messman: The Girl Who Is Allergic to Almost Everything, streaming now on PeopleTV.com, or download the PeopleTV app on your favorite device.

The three together — called a trifecta — create a “perfect storm” of relentless and debilitating symptoms, including fainting, seizures, stomach cramps, muscle weakness and crippling fatigue.

“Patient’s have symptoms from head to toe,” says Dr. Tania Dempsey, an expert on the syndrome.

McKenze has over 100 triggers — which include everything from dozens of foods to cleaning supplies, and even the weather. And because of the EDS and POTS, she has issues that range from seizures to fainting and joint dislocation. She typically wears a protective mask when she leaves the house and uses a wheelchair so she doesn’t fall.

“It’s a lot,” she says, “and if I get stressed or excited I will have a reaction. My triggers also change every day.”

McKenze’s ‘New Normal’

McKenze was forced to leave school because she couldn’t stay awake in class, and now takes online classes at home. She’s on a regimen of up to 21 medications a day, and three times a week she gives herself an infusion of saline fluids in her blood vessels.

“I feel better for around four hours after that,” says McKenze who typically sleeps around 15 hours a day. “That’s when I get to leave the house.”

It gives her energy, and for those brief hours, she feels like her old self.

Watch the full episode of People Features — McKenze Messman: Allergic to Almost Everything, streaming now on peopletv.com, or download the PeopleTV app on your favorite device.

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