Your instinct is pure and ancient. You see a bump, and you want to pop it. It’s the same urge you get with a pimple or a blister.
But a spider bite is not a pimple. A pimple is stuffed with oil and dead skin cells. A spider bite is stuffed with venom and your body’s angry immune response.
Squeezing it is like shaking a can of soda and then opening it. You’re going to make a mess, and everyone gets sprayed. In this case, the spray is toxins going deeper into your tissue.
The gross, juicy science of why you shouldn’t poke it
Spider venom is a cocktail of nasty proteins. When you squeeze, you force that cocktail into the healthy cells around the bite.
This can cause necrosis. That’s a fancy word for “your skin dying and turning into a black, smelly crater.” Nobody wants a crater on their arm.
Doctors call this a “secondary infection.” You take a simple bite, add squeezing, and suddenly you have a full-blown medical drama. All because you couldn’t keep your fingers off it.
Here’s a fun fact: The brown recluse spider is famous for nasty bites. One squeeze can turn a tiny red dot into a wound that takes months to heal. Not so fun now, huh?