haven't had steriods yet. My neuro's office only does it if there is an eye or physical complication with a flare. They seldom do it for "sensory only" flares, which is the majority of mine.
They will do it if the leison shows up active on an MRI. My main problem is by the time I "shot the tube", my new leisons have been inactive. Nothing like hearing that a leison is new but old already.