Ihave a scab on the inside of my left nostril that clears my nose. i keep picking at it because, well, a lot of us have a bad habit of picking at scabs, and this one is the most interesting scab i've had. is that a problem?

True your body needs vitamins such as protein, vitamin d, fish oil etc

Unlike  ct scans, which use x-rays,  mri scans  use powerful magnetic fields and radio frequency pulses to produce detailed pictures of organs, soft tissues, bone and other internal body structures.  differences between  normal and abnormal tissue is often clearer on an  mri  image than a  ct.you can see more with a mri scan. for example on an mri you can see internal bleeding.