How did you teach the chihuahua to seizure alert?
One thing you might want to look into due to some of your mentioned symptoms is dysautonomia.
It was actually already his family's pet Chihuahua, and the boy (who was nine or ten) was 'his' special person. The dog was already sensitive to the boy and panicked when he had seizures, but didn't know what to do. I taught the dog to recognize the symptoms that occur in the body before
a seizure, even before the boy knew. He had petite mal seizures from the littlest of triggers, so we'd flicker a flashlight beam in the boy's face for example, then make the dog pay more attention to the warning signs and get it wound up from just that.
Then it was just a matter of teaching the Chihuahua to tug the boy's shoelaces... Boy starts acting different, tug on his shoelaces! Boy goes and lays down! Everybody praises... If the boy ignored his shoelaces than it began barking frantically. After a few weeks the Chihuahua had this method down-pat.
The boy's parents were shocked it was that easy! But it was perfect because the Chihuahua had such a love for the boy, he never let the boy out of his sight. The dog was able to go to school with him.
And thanks for mentioning dysautonomia. I've tried and tried to find the specific disease or disorder wrong with me, but nothing matches perfectly. Dysautonomia lists a lot of symptoms that I do have, as does POTS. I am going to get my doctor to test me for some things next time I visit...
My body also doesn't retain potassium, magnesium, calcium and salt. That is one reason why my blood pressure drops so suddenly. I've consumed a whole salt-shaker full of salt, two gatorades, smoked vienna sausages and more salty foods within an hour before, trying to get my blood pressure to 'spike' (back to a regular 90/60, very low for me.) My salt level was once a 6 when it should have been from 18 to 27, and the paramedic said I should have at least been in a coma... All of these issues began after the neck injury. Could the jagged arthritis in my neck have created a spinal fluid leak? Or is there a disease that has made my entire body fragile? ... I can't find answers to any of this.
Dysautonomia has more symptoms than I have, but I could be in the earlier stages of it.