Itchy joints when walking after minor meniscus injury is not related to meniscus injury, but it may be caused by drug allergy or sensory peripheral neuritis. 1. Drug allergy: If you apply some herbs or some kind of ointment after meniscus injury without professional doctor’s guidance, it may lead to skin allergy and cause itchy joints. At this time, it is recommended to stop applying the drug and wash the skin to relieve the itching symptoms. 2. Peripheral neuritis: After the meniscus is slightly damaged, the peripheral nerves may be stimulated during the activities, causing inflammation of the peripheral nerves, which will lead to the symptoms of itchy joints. In order to find out the cause of itchy joints during exercise after meniscus injury, it is recommended to go to the hospital.