An impairment of the ability to let go of the SHIFT key on a standard keyboard. This condition can be acute or accidental.
Acute SHIFTLEXIA examples:
"WTF! WHY CAN'T YOU JUST STOP TALKING ABOUT HOW YOU FEEL?!? NO ONE REALLY CARES ABOUT ANYTHING YOU HAVE TO SAY SO JUST SHUT YOUR MOUTH."
Accidental shiftlexia examples:
"You n))b" instead of "You n00b"