If the bump on both sides of the head is caused by congenital causes, it is usually caused by congenital abnormal development of the bones in the head, and does not require special treatment if it does not cause any special pain or affect the appearance. In addition, there may be subcutaneous or bony swelling on both sides of the head. If it is a subcutaneous swelling, you can take a local ultrasound to make a clear diagnosis, but you have to shave the hair on your head when you do the ultrasound to get a clear picture. If it is a bone swelling, you can take a cranial CT to make a clear diagnosis, most often it is a cyst of the meninges or bone.