Therapeutic options for treating chronic headache disorders are legion and diverse and there is a steady stream of publications advocating novel therapies. Pharmacological options that have been advocated include: sodium valproate, olanzapine, tricyclic and Selective Serotonin Reuptake Inhibitor antidepressants, tizanidine, butalbital, nefazodone, baclofen, prochlorperazine, intravenous lignocaine, dihydroergotamine, opioids, monoamine oxidase inhibitors, triptans, botulinum toxin, cryotherapy and analgesic withdrawal5-20 There is much debate as to why headache treatments fail and it is proposed that the choice of an inappropriate agent is a significant reason in some patients21