I could ’ve lead my whole life without learning about Black Hairy Tongue , but here we are .

1.This is what frostbite looks like on darker skin tones.

2.This is what it looks like to have blood in your eye (Hyphema).

3.Guess what? You can have two uvulas!

4.You can also just have a random tooth on the roof of your mouth! This is calledhyperdontia, which essentially just means extra teeth, usually behind your other teeth.

5.Allow me to introduce you to theblack hairy tonguecondition. Yes, it’s really called “black hairy tongue,” and it’s exactly what it sounds like.

6.It’s also possible to get a tumor on your tongue.

7.On a happier note, here’s what it looks like to haveDistichiasis, which means you have extra rows of eyelashes. Fun fact: Elizabeth Taylorhadthis condition.

8.Here’s what it looks like to havehyperhidrosis(aka, excessive sweating). But it’s kind of giving me “THIS IS THE SKIN OF A KILLER, BELLLA!” vibes.

9.Rheumatoid arthritis is no joke.

11.Here’s a less fun fact: the whites of your eye can become swollen! It’s calledchemosis.

12.If eye conditions freak you out, you may want to scroll past this example ofkeratoconus,where your cornea bulges into a cone shape.

13.This person has Aniridia, which means they have little to no iris.

14.As someone with no known allergies, I find allergy skin tests fascinating. This person is allergic to, like, half the things tested.

15.Here’s how long teeth roots can be.

16.And this is how huge a gallstone can be.

17.This is how gnarly a kidney stone can look.

18.If you’ve ever gotten your wisdom teeth out, maybe don’t look while it’s healing. There are giant holes where your teeth used to be. (Fun fact: mine refused to heal and then got infected!)

19.Here’s what it looks like to have a cut in your skin without blood.

20.This isn’t technically the human body, but I just think prosthetics are so cool. This one has a fingerprint!

21.Did you know it’s possible to have a freckle on your eye?

22.This person has a purplish birthmark on one eye (along with heterochromia).

23.Unfortunately, it is possible to grow an eyelash under your eyelid. They can be super itchy, and plucking them out can be extremely painful. (Please take this moment to be grateful that you DON’T have one. Unless you do. Then I am sincerely sorry, and you should probably have a doctor pluck it out.)

24.Sometimes, babies are born with underdeveloped extra fingers.

25.Here’s what it looks like years and years after having an extra finger removed as a baby.

26.Here’s another photo – you wouldn’t even be able to tell the extra fingers ever existed!

27.Here’s what it looks like in the womb when a pregnant person laughs.

28.In case you’ve ever wondered, here’s what a pacemaker looks like.

29.It’s kind of wild to me how much hair color changes naturally over time. Here’s this person’s hair as a kid vs. how it looks now.

30.Of course, you know that hair turns gray and white as you get older. But sometimes, this happens rather rapidly — this guy lost a patch of hair, and it grew back in white. This can occur due toalopecia areata, stress, cancer, or any number of other reasons, so it’s always a good idea to get it checked out.

31.If your hair is growing white due to stress or injury, it can actually change back to its original color, as seen here.

32.Oh, and speaking of white hair, it’s actually transparent. Here’s what it looks like super close up compared to a darker strand.

33.Did you know it’spossibleto be born without a belly button? You also may “lose” your belly button after surgery.

34.You can have surgery to try to reconstruct one or, like this person, get one tattooed on.

35.Here’s a progression of what it looks like to lose a fingernail (sorry).

36.Here’s what a brain surgery scar looks like. Spoiler alert: it’s pretty freaking metal.

37.And finally, just for fun, here are some x-rays of a bunch of different injuries sustained from people handling fireworks. Be careful out there!!!

A close-up of a hand showing multiple burn injuries on the fingers, some of which are covered in scabs and discoloration

A close-up of a human eye, showing significant redness, irritation, and visible veins around the iris

Close-up image of a person’s open mouth, showing teeth, tongue, and throat. The person has facial hair

A close-up view of an open mouth showing upper teeth and gums. The photo shows dental conditions, including visible growths on the upper gum. No text

Close-up of a person's open mouth showing their tongue, which has a brown substance coating it. No names provided

Close-up of a person's mouth with a severe sore on the inside of their lower lip. A gloved hand is pulling the lip down to reveal the sore

Close-up of a person's eye with visible eyelashes and eyebrow

Close-up of a human hand covered in frost, showing frostbite

X-ray image showing two hands with clearly visible bones; fingers appear twisted or deformed

Close-up of a woman's face and then a selfie of her flexing her arm muscles in a bathroom mirror while wearing a tank top. Names unknown

Extreme close-up of an eye with long eyelashes and watery details

Close-up of a person's eye with detailed view of eyelashes and eyebrow

Close-up of a human eye with a black, crescent-shaped area in the iris and a clear, glossy cornea

A person's back showing a skin test with numerous raised reactions, marked with letters A-H and F4, FB, FE indicating different allergens

A person holding a sealed packet with two extracted teeth inside. No text is included in the image

A hand holds a small, oval-shaped, unpeeled potato resting on the fingers. Background includes part of a chair and fabric

A hand is holding a transparent cup, showing the inside. The cup contains a small, spiky object, possibly a piece of food or debris

Close-up of a person's mouth, showing teeth with braces and a small inflamed area on the gum

A close-up of a hand with a long, thin cut in the skin, displaying the wound clearly

Close-up of a hand showing a 3D-printed finger splint with intricate detailing on the thumb

Close-up of a person's eye with a small brown spot on the sclera (white part of the eye)

The image shows a close-up of a person's eyes in three rows. The top row looks straight, the middle row looks left, and the bottom row looks up

Close-up of an eye with an inflamed and irritated inner corner, displaying a small red bump

A newborn holding an adult's finger while swaddled in a hospital blanket. The baby wears an ID band around its wrist

A close-up image of a person's hand with fingers interlocked, showing a relaxed and natural pose on a wooden surface

Two hands clasped together, showing slightly reddened knuckles and an elastic bracelet with small beads on the wrist

Ultrasound image of a fetus

A medical device, resembling a pacemaker, rests on a table next to a green object that could be a container lid

Person's hand showing a section of their curly hair, with lighter curls highlighted among darker curls

View of a man's head from the back showing thinning hair and a prominent bald spot

A single long strand of hair is laying on a flat, plain surface in a loose curve

Close-up microscope image of two intertwined strands of hair

A person's bare torso is visible, showing abdominal muscles. Their face is not visible. They are wearing jeans and holding their shirt up slightly

Two close-up shots of a person's midriff showing weight loss progress from before (top) to after (bottom)

Close-up collage showing six different injured thumbs with various levels of bruising and damage to the nails

Close-up image of a person's head showing multiple surgical staples in their scalp. The person's hair is wet and brushed aside to expose the staples

Nine X-ray images of hands in various stages of healing and reconstruction, showing different bone fractures and medical treatments