C.H.
I would ignore my boys when they used to do that, but they didn't bite themselves.
I would try to hold his arms and his forehead so he doesn't bite you and just rock him, talking quietly about how the correct way to react when angry or frustrated, maybe sing a little song.
When he is calmed down, I would tell him the proper way to behave and what he could do instead. Even though he doesn't communicate with you doesn't mean he won't understand you. So if you talk calmly that you don't like that when he does do that it may get through. It will take a little bit, but he will understand. Try not to react, just be calm. Always do the same thing for the same behaviors.