I’ve worked on a community support training about some of this once. Here’s some stuff paraphrased from that:
It is probably also worth speaking specifically about rage attacks. Rage attacks are a lot like panic attacks. They’re often a result of trauma or a build up of high stress. They’re your survival instinct going into overdrive for a bit because too much has build up and a release is necessary. Like panic attacks, rage attacks are waves of overwhelming emotions that generally have a build-up, a peak and a cool-down. The build-up and cool-down can take hours, the peak rarely exceeds one hour and is often much shorter. Recognizing these stages can help cope with them.
The build-up can feel like a tension in the whole body, especially in the chest which can feel like a weight is pressing on it. Trying to control the rage can feel like holding the lid on a pot of boiling water. From the outside, people in the build up of a rage attack seem irritated and non communicative with a short fuse. They might suddenly speak loudly or slam doors as the lid fails and bits of the pot boil over. This is often seen as being rude, when in fact it’s the person doing their best to stay in control. During the build-up fase, it’s sometimes possible to let the pressure off through acts of controlled destruction (pencil breaking, tearing up cardboard boxes, etc.). For some people deep breaths work, for some people exercise works, for some people writing down a violent fantasy and then tearing that up works. This will differ from person to person.
When not averted, the peak of the rage attack is an overwhelming phase during which the lid flies off and the rage can not be controlled, though it may to some extend still be directed at a point where it can do no or limited harm, such as punching a wall (or preferably, hitting the wall with some sort of stick so you do not damage your hands). People in this stage may ‘see red’ or see spots and may be nonverbal. There isn’t much you can do to support someone during a rage attack except keeping people away from them and trying not to redirect their focus towards a person. As long as the only things being hurt is inanimate objects (and maybe some bloody knuckles): do not intervene. Absolutely do not try to physically stop the rage attack.
NEVER call ‘emergency services’ when a person is experiencing a rage attack. A person in a rage attack can not control their actions, follow instructions, etc. Your phone call can very easily result in their murder-by-cop. Don’t do it.
After the peak comes to cooldown. Most of the rage has passed but the body is still full of adrenaline. Often at this point he person experiences shame and fear that the people who witnessed the rage attack will reject them. It’s quite common to self-isolate in this stage. If you’re supporting someone during this stage: give them that time to themselves. Once they return, you can check in with them in a nonjudgemental way, making it clear that you are still their friend and are not judging them for experiencing a rage attack. After a bit of cooldown, some people enjoy exercise, dancing or swimming to reduce the left over adrenaline in the body. Others might be too exhausted for such a thing.
Many rage attacks are harmless, but if a person did do harm during a rage attack: wait for them to fully recover (preferably at least one night of sleep in between) before engaging in a restorative conversation about the harm done. In such a conversation it is important to be nonjudgmental about the rage attack itself and to clearly separate the rage attack (something the person did not chose and could not control) from the harm (something the person does bear responsibility for). A person who has rage attacks can not ‘decide’ not to have them but can decide to work on repairing harm and avoiding harm in the future. You could work on a support plan together to figure out how better to recognize and re-direct a build-up, how to avoid harm during the rage itself and how to offer support during the cool down.