J00-J06: Acute upper respiratory infections

J04: Acute laryngitis and tracheitis

Acute laryngitis and tracheitis are conditions that involve inflammation of the larynx (voice box) and trachea (windpipe), respectively, which are parts of your respiratory system. With both illnesses, the inflammation usually sets in quickly, which is why they're referred to as 'acute'. Common causes include viral and bacterial infections, irritating substances like smoke and dust, or overuse of the voice. The main symptoms include a hoarse voice, cough, difficulty swallowing, and breathing problems, although you may also experience sore throat, fever, or fatigue. As these conditions progress, airway obstruction can occur in severe cases due to swelling and mucus production. Both laryngitis and tracheitis primarily affect the upper respiratory tract, and can significantly disrupt daily activities due to voice and breathing issues.