How long does decreased appetite associated with teething last?

Individualized. Teething symptoms will be different for every child. Decreased appetite 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.
There. Is no great answer to this question. Every child is different. Teething can start as young as 3 months and may last off and on until 3 years of age. What is important is making sure your child is keeping hydrated and gaining weight. Pediasure and pedialyte are options to discuss with your childs doctor if you are concerned.
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. Be patient.