Infectious arthritis is an infection in a joint. It may also be referred to as septic arthritis. It occurs when an infection caused by a bacteria or virus spreads to a joint or the fluid surrounding the joint. This fluid is called the synovial fluid. This infection usually begins in another area of the body and spreads through the bloodstream to the joint tissue. The infection may also enter the body through surgery, open wounds, or injections.
What Are the Symptoms of Infectious Arthritis?
The symptoms of infectious arthritis can vary depending on your age and the medications you’re taking. The symptoms may include:
- severe pain that worsens with movement
- swelling of the joint
- warmth and redness around the joint
- a fever
- chills
- fatigue
- weakness
- decreased appetite
- a rapid heart rate
- irritability
What Are the Risk Factors for Infectious Arthritis?
Certain people are more likely to get infectious arthritis than others. The risk factors include:
- having joint problems such as arthritis, gout, or lupus
- having a history of joint surgery
- having certain skin conditions
- having open wounds
- abusing illegal drugs or alcohol
- taking drugs that suppress the immune system
- having a weakened immune system
- having cancer
- smoking
- having diabetes
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