Pearls and pitfalls: neurostimulation in headache

Area of Science:

• Neurology
• Neurosurgery
• Pain Management

Background:

• Neuromodulatory approaches have expanded therapeutic options for drug-refractory chronic cluster headache and chronic migraine.
• The field is trending towards non-invasive transcutaneous stimulation, though robust evidence is still limited.
• Invasive methods like occipital nerve stimulation are preferred for chronic trigeminal autonomic cephalgias and migraine, while deep brain stimulation is a second-line option for cluster headache due to side effect risks.

Purpose of the Study:

• To review current invasive and non-invasive neuromodulatory techniques for chronic headache disorders.
• To summarize pearls and pitfalls of established and emerging neuromodulatory approaches.
• To identify open questions and provide recommendations for future research.

Main Methods:

• Literature review of invasive and non-invasive neuromodulatory techniques.
• Analysis of current clinical evidence and trends in headache treatment.
• Synthesis of expert opinion on treatment efficacy and safety.

Main Results:

• Occipital nerve stimulation is a first-line invasive treatment for chronic trigeminal autonomic cephalgias and migraine.
• Deep brain stimulation is a second-line option for cluster headache.
• Sphenopalatine ganglion stimulation shows promise for acute cluster headache attacks.
• Emerging non-invasive approaches include transcutaneous supraorbital and vagal nerve stimulation.

Conclusions:

• Neuromodulation provides diverse options for chronic headache management.
• Further research is needed to validate novel non-invasive techniques.
• Careful consideration of risks and benefits is crucial for selecting invasive neuromodulatory approaches.