What causes nodules ?
There are many causes including faulty singing technique excessive voice use, habitually speaking too low or too high screaming or yelling, or using the voice excessively while sick. Party Girl Vocal Syndrome a condition named by Lori Fredrics is one of the causes of hoarseness. This occurs when an individual becomes intoxicated and over uses the voice, perhaps while sick with an upper respiratory infection in the presence of loud music and smoke. This continual behavioral pattern causes vocal nodules much more often than singing. It is found more often in women because due to the tiny size of female vocal cords and the female endocrine system. If you want an example of Party Girl Vocal Syndrome just listen to Demi Moore. This situation is further complicated if the young man or woman also uses his or her voice to attempt to sing rock music, as was the case with Demi. It is quite similar to Cheer Leaders Vocal Destruction and US Army Humiliators Voice both caused by excessive yelling.