The following aspects should be considered: 1. When blood pressure rises, it causes the expansion of blood vessels in the head and face of the patient, which will stimulate the pain-sensitive structures in the brain, and the patient will show head swelling and pain, which can generally be clarified by measuring blood pressure. The head is swollen and painful like congestion, but it should be considered to be caused by neuropathic headache and tension headache, which are mostly caused by poor rest, fatigue and mental tension. 3. The head is swollen and painful like congestion, which may also be caused by infectious diseases. When upper respiratory tract infection occurs and the body temperature exceeds 38.5℃, it will also cause peripheral vasodilatation, and the patient will also show the swelling and pain like congestion in the head, but the patient is accompanied by coughing, coughing, muscle aches and other symptoms of infection.