The skull protrusion is usually seen in osteoma of the skull, which is caused by traumatic stimulation or congenital developmental abnormalities, resulting in the formation of osteoma lesions in the skull, sometimes increasing in size with age, which may cause pain and discomfort in the osteoma area, and may affect the aesthetics. After diagnosis, if it affects the appearance or grows progressively, surgery can be considered to remove it and repair the skull if necessary.