A swollen head may be caused by trauma, or lipoma, folliculitis, etc. Depending on the cause, general treatment, medication or surgery can be taken. 1. Trauma: for example, being touched or bumped may cause subcutaneous bleeding, resulting in hematoma on the scalp. Appropriate ice compresses can be applied first, and then switch to hot compresses after 48 hours, which is favorable for hematoma absorption. If the trauma is more serious, consult a doctor as soon as possible to find out whether there are other traumatic injuries to the skull, such as skull fracture, brain contusion, and so on. 2. Lipoma: if it is a relatively small lipoma, it can be observed and does not need to be dealt with, while a larger lipoma needs to be surgically removed. 3. Folliculitis: is due to the scalp infection caused by inflammation, for bacterial infection, oral cefixime, topical mupirocin ointment; such as is caused by fungal infection, can be used topical ketoconazole ointment treatment. Head swollen a bag, it is recommended to distinguish the cause and then open the clinic for treatment, such as the need for medication should be carried out in accordance with the doctor’s instructions, can not be used without authorization.