Language Processing Disorder
Affects attaching meaning to sound groups that form words, sentences and stories
The Learning Disabilities of Association of America (http://ldaamerica.org/) defines it in this way:
"It's a Language Processing Disorder (LPD) relates only to the processing of language. LPD can affect expressive language (what you say) and/or receptive language (how you understand what others say)."
Signs and symptoms