Thomas sighed and he went to sit beside his son. "It's hereditary. We didn't know it ran in Dad's family because his parents both died young, before symptoms could show up." Though that could be a contributing factor to the car accident which had killed both of them.
"This...this means there's a chance any of us could have it." Thomas chewed on his lip for a moment. "I'm going to go get tested on Friday because I want to know. You can come with me if you want, but it's your decision." The idea that he could be sick without even knowing it was terrifying, but it was scarier thinking about his son being sick. He didn't want to watch Jamie go through something like this. He already had to watch his father go through it.