Could a headband be the answer to chronic migraines?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Subjects aged 18-70 years 2. Fulfil the International Classification of Headache Disorders -3 (ICHD-3) criteria for chronic migraine, diagnosed by a headache specialist, at least 1 year prior to entering the trial 3. Subject is willing to keep headache medications stable for two weeks prior to entering the study and for the duration of the study. 4. Access to a smart phone to use the mobile application to control the device and use the Headache Pro app to record headaches. A paper diary may be used instead of the Headache Pro app Id required by individual patients. 5. Subject is able to provide written informed consent prior to participation in the study 6. Females of childbearing potential agree to use an effective method of contraception from the time consent is signed until treatment discontinuation. Effective methods of contraception acceptable for this trial are the oral contraceptive pill, patch, implant, injection, ring, intra-uterine system, copper coil, barrier methods, partner vasectomy or abstinence. Participants are considered not of child bearing potential if they are surgically sterile (i.e. they have undergone a hysterectomy, bilateral tubal ligation, or bilateral oophorectomy) or they are postmenopausal 7. If there is any possibility of pregnancy, females of childbearing potential should have a negative pregnancy test within 7 days of commencing the treatment phase. 8. Subject must be willing and able to provide written informed consent. Exclusion Criteria: 1. Epilepsy or history of seizures 2. Current or planned pregnancy during the study timeframe 3. Active suicidal thoughts 4. Pre-existing neurological or neuropsychiatric condition 5. Lesion, tumour or other defect in skull or brain 6. Implant inside skill, cochlear implant or implanted hearing aid. 7. Implanted medical device e.g. pacemaker or neurostimulator 8. Use of other stimulation devices such as spinal cord stimulators, vagal nerve stimulation, auricular nerve stimulator or deep brain stimulation. 9. Concurrent medication overuse 10. Use of cranial botulinum toxin injections or CGRP inhibitors in the past 6 months 11. Current or recent (within three months) participation in another clinical trial. 12. Planned surgical or significant medical intervention during the study period which may affect the study results, at the discretion of the chief investigator. 13. Lacking mental capacity to give informed written consent.