What the Heck Is This Butternut Squash Skin Reaction? – Bon Appetit
As holiday season approaches, the BA Slack channels are popping off with squash content. What’s the best peeler? Butternut squash soup or baked pasta on a cold night? Can you eat the skin? (It depends!) Then outta left field comes this question from senior cooking editor Sarah Jampel: “How does everyone feel about eating raw butternut squash?”
“Big no for me because I get that weird contact dermatitis that some people get with raw squash,” wrote assistant print editor Chala Tyson Tshitundu. “If I’m not wearing gloves when I slice it, my hands get all tight and red and crackly.”
“SQUASH HANDS!” replied Jampel. “I am similarly afflicted.”
“It’s a curse! I just wanna love you, squash!” Tyson Tshitundu commiserated.
Meanwhile, the rest of us were all: 🤨 🎃
Apparently, Jampel and Tyson Tshitundu aren’t the only ones burdened with this butternut squash skin reaction. A quick Google search reveals many people experience the sensation known as squash hands: When peeling, cutting, or handling raw chunks of it, they’re left with a sticky-but-stiff orange-ish film that’s difficult to remove; physically irritating, particularly to the soft skin on the palms; and a major buzzkill. With all those winter butternut recipes on the line—creamy mac and cheese, coconutty muffins, and pretty tarts—we simply had to get the skinny on this strange phenomenon.
So, what is this butternut squash skin reaction all about?
A 1994 study titled “Butternut squash (Cucurbita moschata) dermatitis” by Thomas Potter and Ken Hashimoto describes a “30-year-old female” with no history of hand dermatitis who, “within minutes of peeling and cutting up” uncooked butternut squash, experiences a “blistering eruption on the palms of her hands.” Six weeks later she repeats the process and the hives return. In both cases a topical steroid cleared up the inflammation within a day or so.
The first time Tyson Tshitundu experienced squash hands was last fall, while they were slicing up a bunch of raw butternut and honeynut squash to make soup. “I noticed that my palms started feeling tight,” they tell me. “I thought maybe the squash [sap] had dried on my hands. But after washing them the issue persisted and I was so freaked out I truly thought I was going to have to amputate.” A few supportive Reddit threads later and Tyson Tshitundu was “off the ledge.”
What causes butternut squash dermatitis?
While no precise culprit has been named as the catalyst for squash hands, Morgan Rabach, M.D., a board-certified dermatologist at LM Medical in NYC, says there is an unidentified allergen present in squash—and other members of the Cucurbitaceae family, including pumpkins, acorn squash, cucumbers, melons, chayote, and zucchini—that can result in a kind of contact dermatitis. Essentially: Some mystery compound found in these fruits “irritates the skin to trigger an allergic reaction,” she says.
What are …….