Explain that sir is a ghost, also known as the school veyron.

There is a saying that the prototype of vampires is porphyria patients ~

Drinking blood: For most patients with porphyria, blood transfusion plus heme can effectively relieve symptoms, and it is still the mainstream treatment. Heme is very tough and can still be absorbed by the small intestine through the digestive tract. This means that, at least in theory, ancient porphyria patients can feel better by sucking or drinking blood-this is probably the origin of vampire stories.

Fear of sunlight: Porphyrin is a kind of photosensitive pigment, which will gather on human skin, bones and teeth. Most porphyrins are in.

It is benign in the dark and will not cause any harm to the body, but once exposed to the sun, it will become a dangerous toxin and devour human muscles and tissues. So porphyria patients, like the legendary vampires, can only live in a dark world and can't see the light.

Hate garlic: In the movie "oscar pistorius", "Oscar Pistorius" fights vampires with bullets and sharp knives stained with garlic juice and is invincible. In most vampire legends, garlic, like the cross, is portrayed as the nemesis of vampires. Interestingly, porphyria patients also hate garlic. There is a simple reason. Some chemical components in garlic will worsen the condition and bring pain and other symptoms.

Pale face: most porphyria patients are accompanied by severe anemia, not only because they usually live in the dark, but more importantly, porphyrin in their bodies will affect hematopoietic function and destroy heme production. Usually, patients with porphyria also have a lot of pigment deposits-usually purple.

Teeth as sharp as wolves: porphyrin can be converted into toxins that can devour muscles and tissues in the sun. One of the main manifestations is that it will corrode patients' lips and gums, leaving patients with teeth as sharp as wolves. Rotten gums always look bloody, which inevitably reminds people of vampire.

Immortal body: due to the effect of toxin, the ears and nose of porphyria patients will be corroded by it, and the skin will be covered with scars, which makes it look particularly old. In European legends, people who live forever are often described in a similar way. If it is misinformation, there is a saying called "vampires never die". In fact, the life span of porphyria patients is usually short.