Is there such a thing as Excessive Concentration?

Is there such a thing ? My guess is things like OCD etc. are extremes of concentration. Yuttadhammo Bhikku, for example, alludes to this excess concentration in some of his videos (I couldn't find specific mentions at the moment, I will cite the next time I find one). What are your insights on what is it? what are the pros/cons of it and what a person afflicted with it must do to overcome it? Thanks