Aphasia refers to any one of a number of language disorders caused by damage to brain. Global aphasia is a severe form of "nonfluent" aphasia that affects both receptive (comprehending and understanding language) and expressive (what is communicated) language skills. This type of aphasia is a result of brain damage that is frequently associated with damage to Broca's area, Wernicke's area, and insular regions which are associated with aspects of language. Global aphasia can also occur as a side-effect of a major stroke. This wide-spectrum aphasia leads to severe impairment of of the ability to produce, comprehend, and repeat language.