These red bumps seem to be multiplying on my son and daughter. Should I take them to the emergency room?

Bumps, bites, and rashes are notoriously difficult to diagnose. First rip all the covers off the beds and look for tiny bugs. If you have pets and are in the north, it's fleas. They jumped right on my dog and cat the other day, despite Frontline, as soon as the cold weather hit. Please answer if you can think of anything else - did anyone stay in a cheap hotel (bedbugs)?

No offense meant, just covering the bases.