The forehead is swollen, not swelling is considered to be due to fibroplasia or hematoma mechanization and other reasons, you can through physical and drug treatment and other ways to deal with. 1. Fibroplasia: the human forehead part in the external impact may lead to subcutaneous soft tissue damage, in the process of recovery of the damaged parts, there may be fibroplasia phenomenon, which causes swelling after the impact of the swollen parts do not go down, it is recommended that you can use hot compresses, massage and other ways to promote the blood circulation of the affected area, to help reduce swelling. 2. hematoma mechanization: this is due to trauma caused by subcutaneous blood is difficult to be absorbed by the body, thus forming a subcutaneous hard lump difficult to eliminate the phenomenon, can use hot compresses, massage and other physical therapy methods. Patients should also pay attention to a light diet, eat less spicy and stimulating food, if the use of physical or drug therapy for a period of time, the above phenomenon has not seen significant improvement, it is recommended to consult a doctor in a timely manner.