A head lice infestation caught on video and uploaded to YouTube is leaving millions of viewers from across the web pulling their hair out in panic.
It's one thing to see the image of lice clinging to a man's hair (see above), but it's quite another to watch these things move around and build their own little society.
Since being uploaded last week, the original video has been viewed close to 300,000 times on the video sharing site and countless other times on sites like this and Opposing Views.
It also has more than 600 comments on the Daily Mail at the time of this post.
One individual said they "couldn't even watch," having to scroll straight to the comments with their skin "still crawling."
"This is the most disgusting thing I have ever seen in my life," said U.K. viewer Nicola Smith. "How could this guy allow it to get to this stage? Absolutely revolting."
According to the Centers for Disease Control and Prevention, an estimated "6 million to 12 million infestations occur each year in the United States among children 3 to 11 years of age."
Reliable statistics among adults were not available.
"In the United States," the Center states, "infestation with head lice is much less common among African-Americans than among persons of other races. The head louse found most frequently in the United States may have claws that are better adapted for grasping the shape and width of some types of hair but not others."
It wasn't clear at the time of this posting from which country this video originates. Considering this is horrifying no matter what part of the planet you're on, here's hoping it comes from another world entirely (though probably not).
Have a look if you think you've got the stomach for it.Now that you've seen it, chances are you'll be scratching your head the rest of the day. It's still not entirely clear how this guy could endure it for the 18 seconds the video lasts without doing the same.
Some of the Mail's users shared their harrowing plight with this condition.
"Head lice were the bane of my life when my children were at primary school. It only took one irresponsible parent to not treat their child and the whole process continued.
"It took me a year to get them out of my 3 year olds hair before she even started school (her cousins are older) her hair is down to her bum and really thick. Now I take her every morning and dread to see kids with their hair down."
What do you think of this, readers? Worst case of head lice ever?
[Image via YouTube screen grab]