Acute Laryngitis: This type of laryngitis does not last long, usually from a few days to up to a week. This is brought on suddenly. This can be caused by viral infections, bacterial infections and vocal strain.
Chronic Laryngitis: This type of laryngitis develops over long periods of time. This can result in lasting for weeks or months. This can be caused by long-term smoking, overuse of your voice, allergies, bronchitis, pneumonia, excessive & over exposure to toxic chemicals, acid reflux and viral infections.