I have had left side headaches and goosebumps/tingling feeling for a long time. I think it is tied to a circulation problem I have in my left vertebral artery. For a long time, the hair on the left side of my head grew at a slower rate that on the right, About 3/8 to 1/2 inch over 8 weeks. My hairstylist needed reminding to check the length from side to side.

I rarely have the tingling anymore, nor the hair length problem. It seemed to subside about a year ago. I have been very diligent to avoid the neck/head position that seems to cause the inflammation in my neck. Maybe the injury has healed.

Have you asked a doctor about it?