Voice Loss That Started Like a Cold? Neglecting 'Acute Laryngitis' Can Be Dangerous

The voice loss described in Donguibogam through the relationship between the lungs and heat is primarily diagnosed in modern medicine as acute laryngitis. Acute laryngitis involves sudden inflammation of the larynx, where the vocal cords are located. Because it often starts with cold-like symptoms, people frequently overlook it, yet it directly affects the vocal cords and can lead to complete voice loss. The most common cause is a viral infection. Common respiratory viruses, such as influenza virus and adenovirus, invade the laryngeal mucosa and trigger inflammation. In response, the immune system activates an inflammatory reaction that causes the vocal cords to swell and dry out, preventing normal vibration. Swollen vocal cords act like guitar strings that have grown slack or thickened, making it impossible to produce clear tones. In severe cases, the vocal cords can swell extensively or convulse, resulting in aphonia, where no sound can be made. Bacterial infection, allergic reaction, vocal strain from shouting or singing, smoking, alcohol use, and acid reflux from gastroesophageal reflux disease can also cause acute laryngitis. Smoking and dry environments directly irritate the vocal cord mucosa and deplete moisture, leaving the tissue vulnerable to inflammation. The classical concept of heat corresponds to modern concepts of inflammatory reaction and dryness, while lung qi deficiency aligns with decreased immunity or general physical exhaustion that leaves the vocal cords susceptible to irritation. The primary symptoms of acute laryngitis include voice changes such as hoarseness, loss of upper vocal range, and aphonia, alongside sore throat, cough, fever, and a foreign body sensation in throat. If symptoms worsen, they may cause dyspnea, so they should not be ignored. In children, whose airways are narrower, severe acute laryngitis can readily lead to dyspnea and requires extra vigilance. Resolving vocal cord inflammation with rest and appropriate treatment early on is essential to prevent complications such as chronic laryngitis or vocal cord nodules.