One possible plotline could be Naruto getting caught in a blizzard during a mission and suffering from hypothermia. His friends then have to race against time to find and warm him up. Maybe Sasuke uses his Sharingan to detect Naruto's chakra in the snowstorm.
Definitely Naruto as the victim of hypothermia. Shikamaru could also be involved. He might be the one strategizing the rescue mission, using his intelligence to figure out where Naruto could be in the cold environment. And Hinata might be there too, her concern for Naruto adding an emotional aspect to the story.
In some 'Harry Potter Hypothermia Fanfiction', the Forbidden Forest could be the setting. Imagine Ron and Harry getting lost in the cold forest in winter. They face not only the danger of hypothermia but also the dark creatures lurking. The fanfic could explore how they rely on each other's skills and the magic they've mastered over the years to stay alive and warm.
Often, Harry Potter himself is a main character. Since he's the protagonist of the original series, it makes sense that he'd be involved in a hypothermia - related situation in fanfiction.
Yes, there was a case of an Arctic explorer. He got trapped in an ice cave during a blizzard. Hypothermia overtook him. His nose was one of the parts affected. The skin on his nose became so cold that it basically froze solid. Later, he had to have part of his nose removed because of the extensive damage caused by the hypothermia.
First, set the scene. Describe the cold and dangerous place where the hypothermia situation will occur, like a snowy mountain in the wizarding world. Then, introduce the reader character and their situation that leads to hypothermia. Next, bring in Harry. He could be searching for the reader or stumble upon them by accident. Show his concern and his attempts to save the reader from hypothermia, like using spells or potions.
In a Harry Potter x Reader hypothermia fanfiction, the story could start with the reader being trapped in a cold, damp dungeon. Harry senses something is wrong and goes to find the reader. When he does, he has to fight off some dark creatures first. Once he reaches the reader, he uses his body heat to warm them up as he doesn't have his wand at the moment. This would create a very intimate and heroic scene.
One real story involves a fisherman who was stranded at sea during a cold winter storm. Hypothermia quickly affected him. His toes were the first to be severely damaged. The blood vessels in his toes constricted so much in the cold that the cells didn't get enough oxygen. After being rescued, the doctors tried their best but unfortunately, they had to remove his toes as they had become necrotic.
Poe's use of scientific concepts in his stories makes him a founder. He introduced ideas like the power of the mind and abnormal psychology in his works which were quite novel then.
One common theme is death. In many of his stories, death is either a central event or a looming presence. Another theme is madness. Characters often descend into madness, like the narrator in 'The Tell - Tale Heart'. And there's also the theme of the supernatural. For example, in 'The Raven', the talking raven is a supernatural element.