I have a sister in law in the hospital and they can't find a diagnosis. She started with a sensation of heat in the back of her head while working out. That brought a fierce headache and vomiting. She got a migraine shot like she's done before. Vomiting worsened and she didn't recognize her own children. She's now in the hospital and can only say the word yes. She's not eating or drinking. She tested positive for a UTI, but all big things are ruled out, stroke, aneurysm, heart. Any suggestions?