Sialoadenosis refers increase in salivary glands, especially of the parotid, this phenomenon is non-inflammatory and at the same time nonneoplastic.Although there are many causes of sialadenosis, bulimia is one of the most common causes.We present a case of a 30 year old woman that had have a very large inflammation of the parotid glands for the last month; she was being treated with a lot of medications, antibiotic and anti-inflammatory drugs with no response.We discard some other causes like Sjogren's syndrome, alcoholism, and sarcoidosis and the final diagnosis was sialoadenosis secondary to bulimia nervosa.