What should i do when my partner has a panic/anxiety attack before bed?

Relaxation : Sleep seems to be the trigger so relaxation before sleep sleep hygiene changing sleep environment diaphragmatic breathing paper bag breathing non medical methods even hypnosis may help.

Care for him/you: A panic attack can be terrifying for both the person having it, as well as those witnessing it--especially if it is a loved one. It can be difficult to care for them, as well as making sure you don't get overwhelmed and/or sucked into their panic. Hopefully he is seeking treatment for this. Reading up on the disorder can be helpful as well so you can both better understand what is happening.