Headaches , Poss TRIGGERS

Hello, (non DID here)
know someone that I believe with DID
Non Aware person that has awful headaches, From what I've read, some causes could be ,
1. too many insiders paying attention to the outside,, over stimulation.
2. conflict for control up front,someone suppressing another.
3. insider trying to get something across.
4. conflicts inside about whats going on outside or inside
I know there are countless more, but would like to stick to these ones. Other ideas are welcome .
I seem to be trusted within their system, and somethings I've said before seem to help at different times.
Can all of you please suggest some things that I may say that may get the attention of insiders that may make them realize that the headaches are a problem on the outside, and may not be the only way to get their points across. Or to step back and to help host with the headaches..Thank you for your ideas in advance.. Note,, not trying to change anything,,just help a little...and pass along ideas.. thanks..

Ah yes, the DID headache. We know it well. Whoever is in front shares it. Certain topics of conversation tend to bring it on very suddenly. Mine feel like a migraine headache: excruciating stabbing pain inside my skull. This is nothing like a tension headache.

Talking about something else for a while, and certain relaxation exercises, are helpful. Usually then the headache stops almost as fast as it starts. My sense is that the headache does originate with insiders who are listening and reacting, but they are not sufficiently self-aware that they can control this. So it is up to me, the host, to manage it. I think the relaxation exercises tend to tune them out by making me be "more present", more aware of the body and its surroundings. Most effective is the "body scan" procedure where I check in with what is happening in the body in minute detail. The toes: are they cold or warm? Tingling? Numb? The ankles, calves, and so on.