How long does fussiness associated with teething last?

Individualized. Teething symptoms will be different for every child. Fussiness can be associated with teething and only your child will no how long this will last. Provide loving support, teething rings, the correct dose of tylenol (acetaminophen) for severe pain and plenty of fluids until your child completes teething. Remember, teething is a natural life process... Your child will get through it just as you did.
Depends on the child. Fussiness from teething may last a couple of days to a few weeks. Once the the tooth comes in the fussiness should subside, but will start again when the next tooth comes in. Babies often teeth in cycles. So expect to go through a few rounds.
When tooth erupts. As teeth erupt babies can be fussy, sleepless and irritable, lose their appetite or drool more than usual. Try rubbing their gums with a clean finger, a small cool spoon or a moist guaze pad. A clean teething ring or pacifier will help.