Yes it is ridiculous. You've let him know that you think it is serious. He has the resources to get to the doctor if he wants to. It is out of your hands now. All you can do is call 911 if you think there is an immediate emergency and let it go. You don't have to twist yourself into knots trying to figure out if he is faking or not.
It sometimes helped me to take the relationship and alcoholism out of it. If I was in your house and started screaming about being paralyzed and tingling arms - what would you do? Do the same thing for him. If it is a true emergency, then you have a clean conscious. He'll get medical attention. If he's faking - you still did what any sane person would do and he probably won't fake again.