The main symptom of parotitis is swelling of the parotid glands, but there are other symptoms that may indicate parotitis.

had symptoms of sialadenitis usually manifesting itself as bilateral parotid swelling. Thirty-one of the 67 patients also had submandibular gland swellings. One year later, persistent salivary ...

In 1954 Bonnin et al. 6 reported similar swelling of the parotid glands in 80 per cent of 173 cases of alcoholism with histologic changes in the liver, most of which had progressed to cirrhosis.

Administration of radiotherapy to patients with head and neck cancer often causes damage to the parotid glands, resulting in a marked decrease in saliva production, and associated discomfort.