if the condition you are talking about Syringomyelia without Chiari , you need to get an expert on the subject , to check and make sure your spinal flow is good . If not you may have to have a shunt put in. If your flow is good then you need to be treated with medication. A syrinx can grow , can shrink and can stay the same. If you done have Chiari then injections in the neck for what??? Pain . Usually people that get those injections it helps a little but thats about it. also check and make sure you dont have chiari . if you do have chiari no injections period