Acute hoarseness is also known as sudden onset hoarseness. It occurs within a short period of time and starts quickly, sometimes very suddenly. Patients often do not have any aura before the onset of hoarseness. It is common to have the following aspects: cold and flu, hot food followed by cold drinks, hot and spicy diet, excessive pronunciation, singing during menstruation and mental and psychological factors, etc. When you have a cold or upper respiratory tract infection, the vocal cords and mucous membrane of the laryngeal cavity become swollen and congested, and singing or speaking too much at this time will easily cause damage to the vocal cords and lead to sudden hoarseness. 2.Cold drink after hot food After hot food, the vocal cord mucosa and laryngeal cavity mucosa are congested, and cold drink at this time, the vocal cord mucosa can not quickly adapt to the temperature difference and damage, resulting in acute hoarseness. 3, hot and spicy diet Hot and spicy diet in the south of China, especially the hot pot in the southwest. After eating hot pot, the vocal cords become rapidly congested and swollen, and even both vocal cords bleed (submucosal hemorrhage), which leads to acute hoarseness. 4. Excessive vocal use of the voice causes congestion and swelling of the mucous membrane of the vocal cords, leading to acute hoarseness. It is common for actors to sing continuously, cadres to report continuously, showroom interpreters to explain continuously, salesmen to shout continuously, etc. 5.Singing during menstruation During menstruation, the mucous membrane of the vocal cords is congested and swollen, and singing at this time often causes damage to the vocal cords, resulting in acute hoarseness. 6.Pathological reaction When the organism has a pathological reaction, substances such as histamine and acetylcholine are released, causing vasodilation and increased permeability, and the liquid component of the blood leaks out of the blood vessels and into the tissue, causing tissue edema, which is also one of the causes of acute hoarseness. 7. Psycho-psychological factors When the visual and auditory systems of a person suddenly receive malignant stimuli (such as bad consumption), the speech center of the central nervous system can be damaged, resulting in speech disorders and leading to acute hoarseness. If acute hoarseness is not treated in time, it will turn into chronic, and treatment is more difficult.