Based on the medications that Dan had been prescribed, he was in tremendous amount of pain and he did say other things that did indicate tremendous pain most likely fairly constant. He couldn't go anywhere because it hurt to sit in his wheelchair. He just was not a complainer.
It did not matter if any of Dan's visitors knew sign language, he didn't.
Dan did die of an illness. It was called "despair" from hopelessness, powerlessness, and extreme pain. As a society we just don't seem to understand that diseases of the mind can be so much more dangerous and painful as the worst of the physical type.
If he had lived one more day, there is nothing in his life that would have improved...short of God's intervention. However, we NEVER can "beat" God to something he intends to do. So one more day for Dan would have been one more day of loneliness, helplessness, powerlessness, and severe pain. He has been healed now.
I really want to drive home the idea that as Christians and as human beings, we really need to take time to reach out to the people around us. See the hurt. Make time for people. Be inconvenience because it may be life or death for someone and you may not even know it. Be friends with the people who are hard to be friends with for whatever the reason is. As singles, this IS our blessing of singleness. We DO have the time.