The Mayo Clinic Website has this handy little symptom checker so you can go online and find out if the symptoms you, your spouse or your children are suffering from are serious.
A little information is a dangerous thing my friends. Go play with this thing for a while. Pick a symptom, any symptom and then chose some things. It gives you a list of matching illnesses ranging from the mundane to the OH MY GOD I'M DYING!!!
Here's the problem with this thing. There are a lot of people out there that aren't going to notice that the list of accompanying symptoms that go with the illnesses listed are MANY and that the ones you choose are in bold face type. If only one or two of these is in bold, chances are you don't have that...if all of them are in bold, well then, okay you can panic.
Seriously fun though. Go ahead and see how many different ways you can kill off you and yours. So far I've had about fifteen serious life threatening illnesses. Good times!!!