A terrifying simulation documenting how a tooth can kill you is giving many people on the internet nightmares.
While it's always best to visit a medical professional if you have any health problems, you can always watch Zack D. Films on YouTube for some quick and easy advice.
Of course, you're going to want to pay the GP a visit once you've watched a simulation video for official advice, but Zack's videos certainly provide some answers.
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In one video, the filmmaker touched on how a tooth infection can cause some serious problems.
The simulation explained how if your tooth is infected, then bacteria can 'burrow' deep into your jaw, which can lead to the penetration of a bone.
"It [bacteria] can enter your bloodstream and travel up to your brain," the video states. "The bacteria causes the tissues to become inflamed, which can form into a pocket of pus.
"It'll continue to grow, causing pressure on the surrounding tissues that can block blood flow to vital areas."
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The video concluded by stating that if this is left untreated, the pressure can lead to 'permanent damage' or even 'worse' - aka death.
After the simulation video went viral, many people on social media have been having their say.
"Wtaf! That is a new potential horror gained," one person wrote on Twitter, while a second added: "It’s wild how something so small can have such serious consequences."
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And a third quipped on YouTube: "Every time I watch Zack, I swear I book another dentist appointment!"
While tooth infections are usually cleared up with the right dental care, there is the rare possibility it can spread to other parts of the body including the brain.
Wayzata Dental notes a number of symptoms to look out for if you have a tooth infection.
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Those who are suffering from persistent headaches which aren't easing through painkillers should seek medical help immediately, as well as if they're experiencing nausea and vomiting.
Stiffness in the neck muscles, often associated with meningitis, could be another sign you're going to want get checked out.
On top of that, some of the other key symptoms to look out for may suggest the infection has spread to the brain include a high fever, sensitivity to light, plus dizziness and confusion.
While it may be nothing, it's always best to seek the advice of a medical professional.
Callum Jones