Ask a Psychiatrist and Get Answers to Mental Health Questions ASAP
It sounds like your daughter's boyfriend might have some of both- anxiety and anger management problems. Certainly panic attacks can be brought on by extreme anger and someone's fear that they will become "out of control" in the face of their anger. I would encourage this man to get some professional help in managing both anxiety and anger, and would also encourage your daughter to think about specific ways to keep herself safe during these moments. It might additionally be useful for them to seek couple's counseling as these kinds of issues can cause enormous strain on a relationship.