Hoarseness is the generic term used to describe the changes that occur when you have a voice disorder. Your voice may sound breathy, raspy, softer, or lower pitched, for example. You can become hoarse due to inflammation and irritation that arise from many causes, such as: • Acute laryngitis • Vocal cord nodules • Gastroesophageal reflux • Smoking • Allergies A few other common reasons include aging, thyroid problems, and neurological problems.