Acute

Viral infections

• Mumps
• Ebstein Barr
• Parainfluenza
• HIV

Bacterial infections

• Staphylococcus aureus
• Streptococcus viridans
• Hemophilus influenza
• Streptococcus pneumoniae
• E-coli
• Bacteroides

Immune causes

• HIV
• Sjorgen syndrome
• Juvenile Rheumatoid arthritis
• Ankylosing spondylitis
• IgA deficiency
• Ulcerative arthritis
• Rheumatoid arthritis

Other

• Blunt trauma
• Radiation
• Obstruction- due to stricture or stone
• Drugs

Chronic causes

• Hypoproteinemia
• Miculicz
• Sarcoidosis
• Tumours

Features of Parotid gland swelling

• Pain
• Tenderness
• Enlargement
• Bacterial parotitis- Progressive swelling. pain worsens on chewing
• Viral parotitis- swelling worsening over 5 to 9 days.fever, malaise, anorexia. Most instances have bilateral swelling

Treatment

• Antibiotics
• Warm compressions
• Analgesia
• Hydration
• Incision and drainage if required