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Voice Disorders. A voice disorder is when the voice has a problem with pitch, volume, tone, and other qualities. These problems occur when the vocal cords don't vibrate normally. Your voice is the sound that air makes when it is forced out of your lungs and passes over your vocal cords.
Hoarseness or total loss of your voice is caused by a condition called laryngitis in which the voice box (larynx) becomes inflamed. Laryngitis has many causes, so, if you're aiming to lose your voice on purpose, you have a variety of potential options. However, proceed with caution - this is usually accompanied by significant pain and/or irritation. See Step 1 below to get started.