Acute frontal sinusitis has the following characteristics: First, most of them are induced by cold or cold, cold or cold weather, resulting in inflammation of the nasal mucosa, leading to frontal sinus secretion drainage is blocked, causing increased pressure in the frontal sinuses, stimulation of the frontal sinus mucous membrane, nerves caused headache; Second, the headache has a regularity, time, most of the headache in the morning, headaches, headache gradually aggravated, the most severe at noon, the gradual reduction of the afternoon, the lightest at night, which is associated with This is related to the direction of the opening of the sinuses and drainage; Third, the headache is mostly persistent swelling and pain, the site is located in the forehead, bilateral between the eyebrows; Fourth, easy to recur, acute headache, after antibiotics and symptomatic treatment, the headache gradually improve, relieve, when then cold or cold, can again trigger headache; Fifth, many patients after the onset of the majority of patients can not adhere to a course of medication, it is easy to turn into a chronic sinusitis.