Table 2 Candidates for botulinum toxin A therapy for headaches

1. A case that is not resolved with any other treatment

2. Patient experiencing side effects from other treatment

3. Contraindicated for the patient who is undergoing a standard preventive program

4. Patient working in certain stressful environment

5. Patient misusing or abusing drugs

6. Patient who experienced muscle cramps in head and neck region

7. Patient who prefers botulinum toxin injection

8. Patient does not respond well to the standard treatment