Yesterday, my dad had his brother drive him into the hospital because of headaches, confusion, dizziness, blurred vision, etc. (It took a lot of convincing by me and my mom to convince him to go in, he's always very reluctant to see doctors about problems.) They tested him and he didn't show signs of a stroke while he was there, so they scheduled him for a CT scan later in the week and sent him home. Today he was fine up until about an hour ago. He made me a salad for lunch and was fine while making it, but by the time I'd finished eating it he was all confused and this time his speech was slurred.
So, we called an ambulance, and he's back in the hospital now. The paramedic thought it might be another ministroke since he was starting to recover even as they were assessing him, but they saw enough of his symptoms that I'm sure this time they'll do more before sending him home again.
So now, it's just wait and see.
Edit: Hopefully I'll be able to write more about WoW soon. I'd planned to get back into it yesterday since I finally got my account back after the post-Christmas bills killed my ability to pay my subscription (my ability to write about WoW seems based on my ability to play it), but then this all started.