The protrusion of the occipital bone at the back of the head is medically called the occipital ramus. It is congenital and is present in everyone. It’s just that some people have it more prominent and appear more obvious. It is not a tumor or a brain tumor and does not require any special treatment, let alone surgery. It is mainly located in the lower part of the back of the head right in the middle, with a small piece of bony bulge like a bag. In folk superstition, it is called a rebellious bone, and it is believed that a person with an occipital bulge will have a rebellion. If there are no uncomfortable symptoms, just continue to observe to avoid repeated local friction. If there are painful symptoms, there is a possibility of chronic inflammation formed by local soft tissue pulling. In this case, correct the body posture, avoid a long time a posture, avoid low head time too long, pillow should not be too high, too soft. You can apply local heat, oral anti-inflammatory and analgesic drug loxoprofen sodium, local application of flurbiprofen babu cream, etc., or even closed treatment. If you can’t effectively reduce the symptoms or even aggravate, you need to go to the hospital to improve the examination for treatment.