One example could be a fanfiction where Dean is physically hurt during a hunt gone wrong. Maybe he's attacked by a powerful demon and sustains serious injuries. This can add drama and tension to the story as other characters, like Sam, have to find a way to save him.
Physically, he could be shown with bruises, cuts, and broken bones. Writers might describe his pain in detail, like how he winces when he moves or how difficult it is for him to stand. This makes the reader empathize with his situation.
The theme of Dean being tortured by supernatural forces is also quite common. This could be at the hands of demons or other malevolent entities. It not only shows his physical pain but also his mental strength in trying to endure such torture. Additionally, there are fanfictions where Dean's hurt is related to his inner struggle with his identity as a hunter, a brother, and a man, which adds an extra layer of complexity to the story.
Sometimes it's due to Dean's overprotectiveness. He might think he's doing what's best for Sam but in the process, his actions end up causing harm. For instance, he could keep Sam from a mission that Sam believes is important, and in the struggle, Sam gets hurt.
You can try Archive of Our Own (AO3). It has a vast collection of Supernatural fanfictions, including ones where Dean gets hurt. Just use the search function and type in relevant keywords like 'Supernatural Dean hurt'.
Another trope is the 'mysterious injury'. Dean gets hurt by some unknown or supernatural force. This then leads to an investigation to find out what caused the injury and how to stop it from happening again. Writers use this to create suspense and mystery in the story, keeping readers on their toes as they follow Dean's journey to figure things out while dealing with his pain.
You can try fanfiction websites like Archive of Our Own (AO3). There are a large number of 'Supernatural' fanfictions there, and you can easily search for the ones related to Dean being hurt. Just use the search function and type in relevant keywords.
One common theme is Dean's struggle with self - worth. When he's hurt, either physically or emotionally, he often questions his value as a hunter and as a person.
A possible fanfiction plot could start with Dean being seriously hurt in a car accident on their way back from a hunt. Sam is distraught but quickly springs into action. He calls their hunter friends for help and takes Dean to the nearest safe house. There, he nurses Dean back to health. Sam is extra vigilant, setting up protective wards around the house and being overly cautious about any strangers approaching. He also spends time talking to Dean, helping him deal with the trauma of the accident both physically and mentally.
One common theme is Dean's vulnerability. Despite his tough exterior, in these fics, he's shown as being hurt, which allows readers to see his softer side. Another theme is the strong bond he has with his family, especially Sam. When Dean is hurt, Sam's reaction and his efforts to save or help Dean are often explored.