Are you suffering headache, migraine, neck pain, low back pain or fibromyalgia? The Wellington pain and headache cllinc treats all pain disorders, even if it has been present for many years. If injuries are covered by ACC then there is no charge for treatment on referral from your doctor or physiotherapist. Dr Kanji is a musculoskeletal pain specialist who is performing research on headache and migraine. He has written papers on back pain, hip pain, neck pain and fibromyalgia.