Well, a common theme is the isolation he feels. He might feel that no one truly understands what he has been through, so he withdraws from his friends in some fanfictions. Flashbacks are also very common. For instance, when he sees something that reminds him of a past battle or a death, he gets sucked into a flashback. And there's often the theme of self - blame. Harry might blame himself for not being able to save everyone in the wars, which is a classic PTSD - related theme.
The recurrence of memories related to his traumas is a big theme. Whether it's the memory of Cedric's death or the times he almost died himself, these keep coming back to haunt him. Another theme is his changed perception of the wizarding world. He may no longer see it as the magical, wonderful place he once did. Instead, he might view it as a dangerous place full of threats. Also, his struggle to move forward and find a normal life is a common theme in such fanfictions.
Another theme is the exploration of his past traumas. Writers usually dig into the events that caused Harry's PTSD, such as the death of his parents and his battles with Voldemort. This helps readers understand the root of his condition better.
Yes, there are some out there. Some fanfictions explore Harry's PTSD in relation to his experiences with Voldemort, like the nightmares he might have after facing him so many times. For example, in certain fanfics, he has flashbacks during his classes at Hogwarts which makes it difficult for him to concentrate on his studies. The trauma of seeing his friends in danger and losing some of them also plays a big part in these portrayals.
There probably is. The world of fanfiction is vast and full of all kinds of creative ideas. Considering the popularity of both the Harry Potter series and the Avengers movies, many fans enjoy creating crossovers. PTSD is a complex and interesting aspect to explore. A fanfiction with Harry Potter having PTSD in an Avengers setting could involve things like Harry being transported to the Avengers' universe and his PTSD being triggered by new and different threats, or the Avengers being confused by his magic and his psychological state. To find such a fanfiction, use the search functions on major fanfiction sites, and be sure to include relevant keywords like 'Harry Potter', 'PTSD', and 'Avengers'.
Maybe Harry Potter gets accidentally teleported to the Avengers' world. His PTSD from the wizarding wars is still haunting him. The Avengers notice his strange behavior and powers. They try to help him while also dealing with threats that come their way. Harry has to learn to trust the Avengers and use his magic in this new world.
Identity is a big theme as well. The new - found sibling might struggle with their identity as a Potter. Are they going to be in the spotlight like Harry? Or will they try to carve out their own path? This exploration of identity can be really engaging in these fanfictions. Also, the theme of loyalty comes up. Will the sibling be loyal to Harry and his cause against Voldemort? Or will they be swayed by other forces? These are all aspects that are commonly explored in 'Harry Potter has a sibling' fanfiction.
One common theme could be the exploration of different relationships Harry Potter has with multiple characters in the harem. It might show how he manages to balance his feelings and interactions with them all. Another theme could be the development of unique storylines around the group dynamics within the harem, like how they support or compete with each other in relation to Harry.
One common trigger is seeing the Dark Mark. In fanfictions, just the sight of it can send Harry into a state of panic as it reminds him of the Death Eaters and the chaos they caused in Order of the Phoenix. Another trigger could be the sound of certain spells that were used during the battle at the Ministry, like the Cruciatus Curse.
Another theme is the relationship's impact on the wizarding world. In some stories, Harry's relationship causes a stir among the pure - blood families or changes the power dynamics at Hogwarts. It can also lead to new alliances or enmities. A good example is when his relationship might influence the way the Order of the Phoenix operates.
The theme of identity also comes up. Harry is known as 'The Boy Who Lived' and a great wizard, but with cancer, he becomes just another person facing a life - threatening disease. This makes him re - evaluate who he is and what his purpose is. It also shows how the wizarding world reacts to him when he's not in his full - strength heroic state.
One common theme is the struggle with magic. Since magic can be unpredictable, it can be a source of stress for a Harry with OCD who likes order. Another theme could be his relationships, like how his friends react to his OCD - some might be supportive, others might be confused at first.