Itching inside the calf bone is usually caused by rheumatoid arthritis, nerve inflammation, muscle strain and other reasons. 1. Rheumatoid arthritis: rheumatoid arthritis is an immune disease, if it develops to the late stage, the rheumatoid factor will gradually spread all over the bones, which will lead to itching, pain and other symptoms inside the bones of the calf, itchy inside the bones of the calf. 2. Neuroinflammation: neuroinflammation is an inflammatory lesion, usually due to poisoning, local infection and other reasons, which will cause bone itching, numbness and other symptoms, appearing inside the calf bone itchy situation. 3. Muscle strain: muscle strain refers to soft tissue injuries, generally due to excessive exercise and exercise without warming up and other reasons, which will lead to poor blood circulation, resulting in calf bones inside the sensory abnormalities, resulting in itchy calf bones inside the situation. It is recommended that patients go to the hospital in time to find out the cause of the disease and pay attention to body care.