Why Does My Cut Itch?

Chloe Effron
Chloe Effron

WHY? is our attempt to answer all the questions every little kid asks. Do you have a question? Send it to why@mentalfloss.com.

Your skin protects you by keeping germs out of your body. But when something hard or sharp breaks through your skin, it makes a cut, or a wound. You start to bleed because skin and blood vessels are cut open. Your body works fast to close up the wound so germs can’t get inside and make you sick. But sometimes the wound itches as it heals.

When you get a cut, special blood cells called platelets start sticking together around the opening of the wound. This is called a clot, and it stops the bleeding. As a clot dries, it turns into a scab. The scab helps to keep germs out. The skin around the wound may get pink and swollen. That’s because your body is fixing broken blood vessels and growing new tissue. That’s when you might begin to feel itchy.

Your body releases a chemical called histamine (HISS-tuh-meen) that helps your cells fight infection, close the wound, and fill it in with new tissue. But histamine causes a kind of allergic reaction that can make you itch. Your skin also has special nerves that get irritated when skin and tissue grow and stretch to fill in a wound. Those irritated nerves send a signal to your brain that you have an itch, and that makes you want to scratch it. But don’t scratch! You could scratch right through the scab and cause your wound to bleed. Then the healing would have to start all over again!

To learn more about how wounds heal, check out this awesome animation at The Kid Should See This. Some of the words will be new to you, so watch it with a grown-up!  


This Innovative Cutting Board Takes the Mess Out of Meal Prep

There's no way any of these ingredients will end up on the floor.
There's no way any of these ingredients will end up on the floor.
TidyBoard, Kickstarter

Transferring food from the cutting board to the bowl—or scraps to the compost bin—can get a little messy, especially if you’re dealing with something that has a tendency to roll off the board, spill juice everywhere, or both (looking at you, cherry tomatoes).

The TidyBoard, available on Kickstarter, is a cutting board with attached containers that you can sweep your ingredients right into, taking the mess out of meal prep and saving you some counter space in the process. The board itself is 15 inches by 20 inches, and the container that fits in its empty slot is 14 inches long, 5.75 inches wide, and more than 4 inches deep. Two smaller containers fit inside the large one, making it easy to separate your ingredients.

Though the 4-pound board hangs off the edge of your counter, good old-fashioned physics will keep it from tipping off—as long as whatever you’re piling into the containers doesn’t exceed 9 pounds. It also comes with a second set of containers that work as strainers, so you can position the TidyBoard over the edge of your sink and drain excess water or juice from your ingredients as you go.

You can store food in the smaller containers, which have matching lids; and since they’re all made of BPA-free silicone, feel free to pop them in the microwave. (Remove the small stopper on top of the lid first for a built-in steaming hole.)

tidyboard storage containers
They also come in gray, if teal isn't your thing.
TidyBoard

Not only does the bamboo-made TidyBoard repel bacteria, it also won’t dull your knives or let strong odors seep into it. In short, it’s an opportunity to make cutting, cleaning, storing, and eating all easier, neater, and more efficient. Prices start at $79, and it’s expected to ship by October 2020—you can find out more details and order yours on Kickstarter.

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The Little News Ears Podcast Helps Keep Kids Informed Without Overwhelming Them

Little News Ears translates current events into kid-friendly terms so parents don't have to.
Little News Ears translates current events into kid-friendly terms so parents don't have to.
Ranta Images/iStock via Getty Images

Kids are often curious about things they overhear on television or in conversations around them, but trying to translate that information into a kid-friendly format isn’t always easy. That’s where Little News Ears can help.

The program, available both as a podcast and as a YouTube video series, explains intriguing news stories to children in a simple, upbeat, and often funny way. In it, a young boy named Bram, a futuristic dog-like being named BoxerBlu, and a loris named Otis cover everything from Prince Harry and Meghan Markle’s decision to step away from their royal duties to people mudlarking (hunting for treasure) along the River Thames. More serious topics, like the deaths of high-profile people, are presented “in the vein of Fred Rogers teaching children about the Kennedy assassination,” as the website explains.

Little News Ears was created by Dan Buck, a former primary school teacher who now serves as the Head of School at Tessa International School in Hoboken, New Jersey. While the focus of the series itself is to express the news in ways that preschoolers and elementary school students can understand without frightening or overwhelming them, the website also includes lesson plans, vocabulary lists, and other resources to help parents and teachers learn how best to educate children on current events.

Usually, Little News Ears is offered as a subscription service—$6 per month or $55 for an entire year—but Buck and his team have made the program, along with the supplemental materials for educators, completely free for as long as the coronavirus pandemic lasts. You can learn more about the site and sign up for free access here.