They are two different protocols. Post Office Protocol, which works like a post office box, where you go to get your mail, and Internet Message Access Protocol, which works by synchronising with the server. In most cases, I recommend IMAP. These pages may help you decide:
Sure, some fresh injuries might hurt for a short time frame. However, unless there is a definitive neurological link, these will heal and the pain should stop. If not, then there is a good chance that the pain is not due to the herniated disc at all. So, some herniations can heal, some may not. Degeneration never heals. However, statistics show that healing is not needed in order for the back or neck symptoms to resolve.
Dr. Ron Daulton, Jr. A ruptured disc is the final stage of a disc injury, where the outer wall of the disc tears completely through, and the jelly within the center of the disc (the Nucleus Pulposus) starts to leak outside of the wall of the disc. You may also hear this condition referred to as a Sequestered Disc. You can see a better visual of this in the image below, but the key difference between this, a bulging disc and a herniated disc, is that the wall is completely torn (i.e. ruptured).