How common is joint pain in reactive arthritis?

Reactive arthritis is an inflammatory joint condition that can occur after an infection elsewhere in the body. Pain, swelling and stiffness often involve the knees, ankles, feet or other lower-limb joints, and symptoms may be uneven from one side to the other.

A recent stomach, urinary or genital infection may be relevant, even if it has already improved. Eye irritation, pain when passing urine, skin changes or heel discomfort can also provide useful clues. Joint pain after an infection has several possible causes, so it needs an assessment rather than a conclusion based on timing alone.

Contact a clinician if joint pain and swelling follow an infection or if walking becomes difficult. Tell them about recent diarrhoea, urinary symptoms, genital symptoms, fever, eye irritation and any medicines taken.

During painful periods, balance rest with gentle movement so the joint does not become unnecessarily stiff. Elevating a swollen limb and using a wrapped cold pack for brief periods may provide comfort. Ask before taking anti-inflammatory or other pain medicines, particularly if you have other medical conditions.

Seek urgent help for a hot, very swollen joint, severe pain with inability to bear weight, fever, or a painful red eye with light sensitivity or blurred vision. These symptoms can require prompt treatment.

Arrange review when pain persists, new joints become involved, swelling returns or symptoms interfere with work, sleep or walking. Note the infection symptoms and the dates of joint changes to discuss at the appointment.

Could a recent infection be relevant to my joint symptoms? Do I need tests for infection or inflammation? Which movement is safe while the joint is swollen? Should I see an eye specialist or rheumatologist for any associated symptoms?