A raised sclerite at the back of the head is mostly a normal anatomical structure because normal people have a bony bump called the extraoccipital ridge at the midline of the back of the head. Some people have a more obvious development of the extraoccipital ridge, while others have a less obvious one, which is below the major intracranial venous sinus convergence point, so the local thickening and bulging of the extraoccipital ridge is mainly to protect the venous sinus below from external forces and other injuries. If the raised sclerite is not in the midline of the back of the head, it is likely to be an osteoma of the occipital bone, and a cranial CT with a bone window should be performed to clarify whether it is an extraoccipital ridge or an occipital osteoma. If it is an occipital osteoma, it can be surgically removed and the prognosis is good, and it will not recur after removal, because occipital osteoma is a benign lesion.