Can dehydration cause you to feel nauseous?

Yes: It can. Dehydration can cause fatigue, headaches, stomach aches nausea, weakness, if getting hydrated resolves it then that is the answer. If not, consult with your doc if it is ongoing and a problem for you.

Dehydration: Yes! it's a vicious cycle! nausea forbids you from drinking and for dehydration, you need to drink. Break the cycle by drinking little sips of oral electrolyte solution slowly ( say 2-3 oz in 60-90 min). Other symptoms-- light headedness, dry mouth, decreased urine output, etc, etc.