A swelling on the head that is painful to touch may be caused by acne due to trauma, intracranial hematoma cysts, lipomas, fibroids, etc. If there is a history of trauma to the head, a localized bruise may appear as a spontaneous reaction of the body. The presence of acne or sebaceous cysts in adolescents or middle-aged people can also cause lumps, redness, swelling, and heat pain. After a traumatic injury, the blood vessels between the cerebral cortex and the skull rupture and blood continues to collect, producing a hematoma that can form a prominent swelling on the skin surface with painful symptoms. The fat cells in the head gather and continuously form swellings to form lipomas that protrude from the skin and make localized bulges. After trauma and radiation damage to the human body, fibroids are formed, which form bulging swellings on the head and are painful, and can be surgically removed when cysts appear.