Meaning of paragraphia

par•a•graph•i•a

Pronunciation: (par"u-graf'ē-u), [key]
— n. Psychiatry.
  1. a disorder marked by the writing of words or letters other than those intended, or the loss of the ability to express ideas in writing, usually caused by a brain lesion.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.