It could be related to the pressure of living up to his reputation as 'The Boy Who Lived'. Snape's intimidating presence might just be the trigger that makes him crack under all that stress.
There are several potential causes. It could be that Harry has been bottling up his emotions for a long time. He's constantly in danger, has to deal with schoolwork, and the expectations of everyone around him. Snape's class might be a place where all those feelings finally overflow. Maybe he's also worried about a secret he's keeping, like a new spell he's been experimenting with that could be dangerous. And Snape's sharp eyes and critical nature make him feel like he's about to be exposed, which leads to the panic attack.
Snape might be initially taken aback. He could hide his surprise behind his usual stern facade and perhaps try to maintain order, but secretly be a bit worried.
Well, I'm not sure of the exact name, but there are some fanfics on platforms like Archive of Our Own. You can search using the tags 'Harry Potter', 'panic attack' and then look through the results to find one that suits your taste. They often explore different aspects of Harry's character through these difficult moments.
In this fanfiction, Naruto's panic attack might be caused by the pressure he feels. He has so many responsibilities, like protecting the village and his friends. Yamato might be a trigger because Naruto doesn't want to show weakness in front of him, but the stress gets to be too much.
To write an effective 'Harry Panic Attack Fanfic', start with a good understanding of Harry's character. You need to know his past traumas and how they could trigger panic attacks. For example, his experiences with Voldemort could be a great source of anxiety.
I'm not sure of a specific title off the top of my head, but generally, a good fanfiction on this topic would explore the emotional turmoil Harry goes through. It could show how his friends, like Hermione and Ron, try to help him. Maybe they use magic in unique ways to soothe his panic, like a calming spell Hermione invents. Fanfictions often take these kinds of directions to add depth to the characters.
Self - discovery is also a theme. Harry often discovers more about himself and his own mental and emotional state through experiencing these panic attacks. He may learn to accept his vulnerability and find new ways to cope, which can be a really inspiring part of these fanfictions.
Perhaps a mind - melding gone wrong. If the other entity's mind is too complex or filled with negative emotions, it could disrupt Spock's mental balance and cause a panic attack.
I've heard that 'Panic in the Shadows' is also a good one. It not only focuses on Harry's panic attacks but also ties it in with the overall mystery and danger in the wizarding world. It gives a new perspective on how Harry copes with both external threats and his internal struggles.
One popular 'Harry Potter Panic Attack Fanfic' might be those that focus on a character like Harry himself having a panic attack during a particularly intense moment, like facing Voldemort. For example, a fic could describe his internal turmoil when he realizes he might lose his friends in the final battle. Another could be about Hermione having a panic attack during exams, as she always puts a lot of pressure on herself. There are also fics about Neville having a panic attack when he has to stand up to the Death Eaters in the Battle of Hogwarts, showing his growth from a timid boy to a brave fighter.
Yamato might first be a bit shocked. But then he'd probably try to calm Naruto down. He could use his wood - style jutsu to create a peaceful environment, like making a small forest around them to soothe Naruto.