While anyone who texts has probably sent or received weirdly illegible messages at some point, Harvard researchers point to garbled texts as one possible indicator of neurological problems.
Researchers at Henry Ford Hospital in Detroit present a case study in which "dystexia" was the only symptom of a stroke. The patient had no trouble speaking, only texting.
A woman is having what is believed to be a stroke. She manages to drag her laptop toward her and sends an almost incomprehensible call-for-help Facebook message to her husband.