Here you have ask treatment for back pain but in your explanation you have given symptom of neck pain radiating to arm and hand, back pain, as well Migrain and headache along with painful lump on your neck. As per the symptoms there could be multiple possibilities or problems with you. Neck pain radiating to arm and hand could be related to cervical spine issue along with lump at cervical spine. Pain in back to buttock could be related to lumbar level spinal issue along with sciatic nerve disturbamce. Headache and Migrain could be related to deficiency of minerals vitamins and protein in body or too much of physical or mental stress. How ever to conform the diagnosis you have to visit a ortho and neuro doctor and here they will check with physical tests as well may ask for MRI scan of spine and brain if needed. Now here ortho will guide yo for treatment based on severity of problem. If there is mild to moderate spinal problem then it can be treated with few medication along with physiotherapy treatment. If there is any thing major then ortho may ask for surgical correction. For lump over your neck also if it is painful and increasing in size then need to go for surgical excision along with biopsy. I also suggest to take a postural correction advice as well spinal exercise advise from physio to follow it regularly in future for prevention of further issues. For Migrain and headache treatment will be guided by your neuro physician based on physical examination and MRI report. It may be medical or surgical which ever is needed. I suggest you can also use hot and cold pack frequently to have some more relief in soft tissue. I am sure this will help you if you follow step by step. Take care.