M03.0: Postmeningococcal arthritis

Postmeningococcal arthritis is a medical condition that can occur after an infection caused by the meningococcal bacteria, which are primarily known for causing meningitis, an inflammation of the membranes surrounding the brain and spinal cord. Arthritis, related to inflammation of the joints, usually happens when the body's immune system, while fighting off the bacterial infection, also mistakenly targets the joints. Symptoms can include pain, swelling, redness, and difficulty moving the affected joints. It can affect any joint in the body, but it is most common in the knees, wrists, and ankles. The condition is not contagious, and it is not a result of the meningococcal bacteria directly infecting the joints. The exact course of the disease varies among individuals, with some experiencing a single episode while others may have recurrent attacks. It can cause discomfort and interfere with the normal functioning of the affected joints, but it does not typically contribute to long-term joint damage or disability.