A disorder characterized by an impairment in the development of an individual's expressive language which is in contrast to his/her nonverbal intellect and receptive language development. the impairment may be acquired (i.e., due to a brain lesion or head trauma) or developmental (i.e., no known neurological insult).

Expressive language disorder is one of the "specific developmental disorders of speech and language" recognized by the tenth edition of the International Classification of Diseases (ICD-10). As of the eleventh edition (ICD-11, current 1 January 2022), it is considered to be covered by the various categories of developmental language disorder...