After I woke up on Wednesday with the worst headache of my life looking just like that first photo, I went to my oral surgeon, who sent me in for emergency surgery immediately. I spent a night in the ICU and three days recovering. He explained that I had developed a serious abscess that had spilled into my palate and threatened to close my windpipe completely, and that if I hadn't come in I probably wouldn't have made it to the weekend.
It was an extremely sobering look at my priorities and good luck. I was young, and health insurance hadn't been a priority - had I been bootstrapping or freelancing instead of a part of a team with the good sense to get a group health insurance policy, I might have dug myself into about $40,000 in debt, or worse - hesitated to go to the doctor's for even longer.
Don't fuck around with your health. I dodged a bullet. It's tempting to push these responsibilities off like any other, but like other commentors said, it runs directly contrary to your duty to be healthy and present for your team. Dead entrepreneurs make no products.