A communication disorder is a disease or condition that partially or totally prevents human communication. The defect can be in producing, receiving or understanding the communication.
Examples of communication disorders:
autism -- a developmental defect that affects understanding of emotional communication
aphasia -- loss of the ability to produce or comprehend language
... Radewijns, the founders of the
Brethren of the Common Life. His writings are
all of a devotional character and include tracts and
meditations, letters, sermons, ...