We've faced this problem with Pets.SE.
We've discussed if these types of questions should be automatically closed, and (after about 18 months in beta) we've come to the consensus that they should be left open. We can still provide some assistance.
Sometimes the person has talked to their vet, but the vet didn't give them very detailed information or the person wasn't in a frame of mind to remember/absorb the information. One example was My cat ate (part of) a balloon. What should I do?. The pet owner remembered to watch for "strange behavior" and we were able to answer with some specific behaviors to look for.
In other cases we try to outline how serious the situation is to convince the person to take their animal to the vet, such as What can I do for my turtle who fell down three floors?
We've also given advice on how to talk to veterinarians (what types of questions to ask), such as Tightly curled over tail and strange gait.
This type of stuff is helpful, but I'm not sure if it's the right approach on a site for human health.