Pins and needles pain in the flesh at the free end of the eleven ribs may be caused by occupational diseases, inflammation, trauma and other reasons. 1. Occupational diseases: for example, long tumors, cysts and other occupational diseases compressing the peripheral nerves will cause neuralgia, swelling in the affected area, the patient should do X-ray, pathological analysis of the examination. 2. Inflammation: for example, intercostal neuritis, costochondritis, inflammation includes infectious inflammation and non-infectious inflammation, inflammation stimulation of the affected area can cause pins and needles pain, the patient has to do physical examination, blood test and other related tests. 3. Trauma: If the location of the free end of the eleven ribs is traumatized, it can cause pain in this area, and the nature of the pain is usually swelling and pain, which can also be manifested as pins and needles pain. Eleven ribs free end position in the flesh pins and needles kind of pain may also be other reasons, to actively to the hospital, patients do not make their own treatment, to avoid the adverse results.