Inflammation of parotid gland.
Aetiology
- Dehydration
Infectious parotitis:
- Acute bacterial parotitis
- M/C S. aureus, S. pyogenes and E. coli
- Extrapulmonary tuberculosis
- Acute viral parotitis (mumps)
- HIV parotitis
Autoimmune parotitis:
- Sjögren’s syndrome
- Lymphoepithelial lesion of Godwin
- Blockage
Iatrogenic causes:
- Chronic nonspecific parotitis
- Recurrent parotitis of childhood
Other associated conditions:
- Sialadenosis (sialosis)
- Sarcoidosis
- IgG4-related sialadenitis
- Pneumoparotitis
- Associated with Bulimia
Diagnosis
Investigations
- ↑ Serum and urinary amylase
Differentialal diagnosis
- Masseteric hypertrophy
- Can present as facial swelling in the parotid gland area and may be confused with ‘true’ parotid gland swelling