What's with the head pack?

When the top of the head shows a mass, you should first understand whether it is caused by traumatic factors, because under the action of external force, the top of the head will show hematoma, so it will form a local mass. Excluding traumatic factors, it can also be considered to be caused by sebaceous cysts, also known as peloma, mainly due to the blockage of sebaceous glands below the skin. If bacterial infection, it will also form local inflammation. Allergic constitution patients are prone to show a lump on the top of the head, if exposed to chemical substances. After dyeing and perming, it will cause the human body to show allergic performance, which is easy to cause. After going to the hospital dermatology department for diagnosis, under the guidance of a doctor, anti-allergic drugs such as loratadine are treated.