Which Headaches need Investigation

These headaches need investigation and immediate medical attention when accompanied by any of the following symptoms:

1. Drowsiness
2. Confusion
3. Memory Problems
4. A fever
5. Unexplained
6. Migraine
7. Nausea
8. Vomiting
9. Difficulty speaking
10. Numbness or tingling
11. Sensitivity to light and sound.