Advice for a cranky baby that's teething? He has never been cranky. No fever. He is 6 months old and drools to the point where a bit of mouth rash

Teething. . Teething pain can make babies cranky, but it shouldn't be as bad as it sounds. 6 months usually means first teeth; I'm guessing. Drooling can also be a sign of sore throat, even without fever. If pain medicine isn't working; see your doctor. If the rash is on the skin around the mouth; try some ointment, to try to keep it waterproofed. If is on the lips or inside the mouth; it's not from teething.