We don't know for certain what caused his seizures. I suppose it doesn't matter. He is home and has a new medication regimen predicted to help prevent them going forward.
I even spoke to his husband, Reg, for a while, and it wasn't unpleasant. Reg has been a trick bag lately, so I was actually kind of afraid when he came on the line. But he was communicative and doesn't seem to hate me ... today
I have been worried about Henry every day for the last week. I feel like a weight has been lifted. He is not well, "well" might be a relative term from here on out, but he's home and he and Reg seem to be coping. So now I can finally exhale!