<unk>  of the parotid gland accounts for a much larger percentage of hospital admissions than<unk>  of the submandibular gland. Submandibular<unk>  has been said to only account for 10% of all cases diagnosed as<unk> . Chronic<unk>  has been classified as a relatively common presentation, whereas bacterial<unk>  and sclerosing polycystic<unk>  are defined as rare. Chronic sclerosing<unk>  has been shown to affect predominantly males who are over the age of 50, with 40% of cases having an allergic disease, such as chronic sinusitis or bronchial asthma. One study found that 112 patients from England and Wales ranging from 12 to 81 years of age complained of symptoms from their diagnosed<unk> , with the group having a mean age of 39 and a standard deviation of 16 years. The study also found that more patients underwent surgery to treat their<unk>  between the ages of 20 and 69 years but that there were many more patients who complained of symptoms between the ages of 20 and 49, and then went on to be diagnosed with<unk> . In each group studied, most patients suffered from<unk>  in their twenties but there was also found to be a significant number of females whose symptoms started in their thirties and forties. More women reported symptoms that were confirmed to be<unk>  than men in this study, which may suggest that females are more likely to be affected but more research would need to be done to be sure of this. A study done on the epidemiology of<unk>  in the United States of America found that acute suppurative parotitis is responsible for 0.01-0.02% of hospital admissions, with the submandibular gland accounting for 10% of cases of<unk>  in the major salivary glands in this population. This study found that there was no predilection to any race, sex or age, although it was noted that<unk>  in general tended to occur in people who are debilitated, dehydrated or older. Bacterial<unk>  is uncommon nowadays and is usually associated with sialoliths. A study involving hospitals in the United Kingdom found that the incidence of admissions for<unk>  is 27.5 per million of the population, with the most common cause being mumps which causes a viral infection in the salivary gland. Ascending acute bacterial parotitis used to be a common perimortal event but today this is no longer the case due to antibiotics and basic modern care which means that patients will be much less likely to become dehydrated.
Sialadenitis
Laryngitis
Phlegmon
Tonsillitis
Pharyngitis
Posthitis
Sinusitis
Placentitis