Describes a videogame ported to PC from a console system, or co-developed for both console and PC, that is percieved to suffer from the alleged shortcomings of console gaming.
Symptoms of console-itis include save points, low texture/graphical detail, poor or no mouse support, lack of gameplay depth, and limited configuration options.
Presumably, with consoles becoming more and more like PCs, console-itis will become less and less of an issue in the days and years to come in the future of the age of tomorrow.
There are too many examples to list. Just think of almost any console game ported to PC that you've played, and there's your example.