The swelling of forehead may be caused by subcutaneous lipoma, cranial osteoma and trauma.
1. Subcutaneous lipoma: Subcutaneous lipoma is a kind of benign tumor, the etiology is still unclear, and genetic factors have a certain relationship, which will lead to the emergence of local multiple or single lumps, appearing in the forehead can lead to local swelling.
2. Cranial osteoma: cranial osteoma is a benign tumor that occurs in the skull, the cause of which is still unclear, and it may be caused by physical factors and genetic factors, which may lead to subcutaneous hard lumps, headaches, and so on.
3. Trauma: trauma is mainly caused by direct and indirect violence, which will cause local skin redness and pain, and will also affect the capillary circulation resulting in local bruising and swelling.
Swelling forehead may also be sebaceous cysts, allergies and other diseases, it is recommended to go to the hospital in a timely manner to clarify the cause of the disease and follow the doctor’s instructions for treatment.