Deep in the face, there are four paranasal sinuses, namely the maxillary sinus, frontal sinus, septal sinus, and pterygoid sinus. Acute sinusitis is usually secondary to a cold or rhinitis, and is caused by edema and inflammation of the nasal mucosa involving the mucous membranes of the sinus opening and sinuses. Acute sinusitis headache has a regularity: 1. time: it is not painful to wake up in the morning, and between ten o’clock and noon, the patient starts to have a headache, which is usually more intense and uncomfortable; 2. site: acute sinusitis is a headache caused by the more superficial sinuses, including the septal sinus, frontal sinus, maxillary sinus, and the location is usually in the inner canthus of the eye, and the forehead area; the location of the butterfly sinus is deeper, so the headache it causes is usually In the top of the head, the back of the occipital area and other areas.