Baby has muscle jitters from mother's injection

The mother resisted being injected throughout the pregnancy until a month before the baby was born because she would need a cesarean section and the hospital and doctors told her they would not allow her into the hospital without the injection. She complied and the result is that the baby is back in the hospital. The baby needs a brain scan as they cannot understand what is causing the jitters which are getting worse. Every test they have done has come back normal and they admit they have no idea what is causing the problem so they are transferring him to the Great Ormond Street hospital to do further investigations.