Bursitis causes

Aseptic bursitis is commonly caused by prolonged pressure, overuse, or strenuous activity. Elbows and knees are the most commonly affected because they are rested upon more than many other parts of the body with bursae and they also get the most repetitive use. Shoulder bursitis is more commonly due to overuse of the shoulder joint and muscles. Inflammation of bursae can also be caused by other inflammatory conditions such as rheumatoid arthritis and Spondyloarthritis. Gout and pseudogout can also be a cause of bursitis. Common causes of septic bursitis include Staphylococcus aureus, Staphylococcus epidermidis, and Streptococcus spp.^{[1][2][3][4][5]}

Common causes of aseptic bursitis include:^[1][2][3]

• Direct injury or trauma
  • Prolonged pressure (can occur after prolonged kneeling or leaning on an elbow)
  • Overuse or excessive strenuous activity
• Systemic inflammatory disease
  • rheumatoid arthritis (RA)
  • Spondyloarthritis
• A crystal-depositing condition
  • Gout
  • Pseudogout

Common causes of septic bursitis include:^[2][4][5]

• Staphylococcus aureus
• Staphylococcus epidermidis
• Streptococcus spp

Less commonly, septic bursitis is caused by:

• Mcobacteria
• Haemophilus influenzae
• Sporothrix schenckii

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