If a bump on the forehead is not painful, the most common factor is a subcutaneous fatty nodule, usually called subcutaneous lipoma, which is a benign hyperplasia with no obvious clinical pain and no typical clinical symptoms before the initial enlargement. In ultrasound imaging, subcutaneous fatty nodules will appear, which can be temporarily left untreated if there is no obvious pressure pain or obvious fluctuation. As the fatty nodules increase in size or appear surrounded by a visible envelope and accompanied by a feeling of pressure and pain, surgery and complete excision may be considered. In addition, if a packet is raised on the forehead, there is a possibility of malignant connective tissue hyperplasia, which is a malignant tumor, and also a nerve twitching attack of peripheral radiculitis.