Significant Pain
Bruising
If you get bruising—and it's not from overly vigorous scratching—from a bite, it's a sign that bite could be serious. Make the call.
Swelling Past The Initial Area
A bite that swells past the initial bite area can be a sign that bite is more serious than a run of the mill bug bite. And a sign you should see a doctor, STAT!
Feeling Like Your Throat Is Closing
If a bug bite leaves you feeling like your throat is closing, or you can't catch enough air in your lungs, head to the doctor without hesitation.
Post Bite Chest Pain
Any post-bite chest pain should be taken seriously and should be treated by a doctor.
Persistent Racing Heartbeat
A bug bite shouldn't cause your heartbeat to elevate or race. If it does, head to the doctor and have it checked out.
Dizziness
Feeling dizzy after a bug bite? Go see a doctor—but maybe have someone else drive you.