M02: Reactive arthropathies

M02.1: Postdysenteric arthropathy

Postdysenteric arthropathy, as designated by ICD-10 code M02.1, is a type of reactive arthritis that can occur after an infection in the digestive system, particularly dysentery. This condition typically involves inflammation and pain in the joints, often affecting the knees, ankles, and feet. Symptoms usually begin one to three weeks after the initial gut infection, and it's thought to be an immune system response, where the body mistakenly attacks its own tissues. The severity of the joint infection can vary, from mild discomfort to severe pain and swelling that can limit mobility. Other possible symptoms may include inflammation in the eyes or urinary tract. While postdysenteric arthropathy can affect people of all ages, it's more common in adults aged 20-40 years. The condition typically resolves on its own over time, but can occasionally lead to long-term joint problems.