The physical irritation due to overstimulation caused by Christmas decorations and hearing the same Josh Groban and Michael Buble
Christmas CDs over and over and over again. Usually caused by overly enthusiastic co-workers and/or spouses. Initial signs may take
one to two weeks to appear after
first exposure, but conditions generally increase exponentially.
Related to Christmas fatigue.
"Do you mind if I turn the
radio on? They've started playing Christmas
music."
"Only after we stop by the
store to get some Benadryl for the Christmasitis flare up I'm about to have..."