severe anxiety attacks can be difficult for students and teachers to witness and treat.
more research and education should be done for this situation.
students hopefully have been diagnosed already with anxiety disorder, could have their own medications like xanax (alprazolam), ativan (lorazepam) which are short acting benzos which can help decrease anxiety or panic attcks
long acting benzo such as valium (diazepam) or klonopin (clonazepam) can also be used as well.
hydroxyzine (first gen antihistamine) can help decrease anxiety symptoms in the acute setting and some students could have this as a prescription medication to help with anxiety
calming down the client, having them take deep breaths, closing their eyes, visualizing a calm place can help with acute panic symptoms.
usually the panic symptoms will pass with time
the student would benefit from follow up with a psychotherapist to talk about anxiety symptoms and triggers for their anxiety.
they may benefit from exercise therapy, yoga, stretching as on going therapies to help decrease anxiety symptoms.
let me know if you have questions.