9 Symptoms of Serious Health Matters Headaches Headaches can be caused by dehydration, a change in the weather, fatigue or hunger. But they can also be symptoms of other more serious issues, especially if you experience them along with dizziness, nausea, vomiting or trouble walking. Previous Next 1 2 3 4 5 6 7 8 9 2018-03-08 admin Share ! tweet