The history of aphasiology dates back more than a century, but impairments of discourse abilities have only recently been described. Whereas changes in discourse abilities have always been part of the qualitative description of language following a brain lesion, the conceptual frameworks needed to identify impaired components of discourse in brain-damaged individuals have been available only since the late 1970s (Joanette and Brownell, 1990). Initial descriptions of discourse impairments essentially referred to traditional linguistic indicators, such as the noun-verb ratio or the percentage of subordinate clauses (e.g., Berko-Gleason et al., 1980; Obler and Albert, 1984). With increasing knowledge about the organization of the meaning conveyed in discourse, more specific descriptors have been introduced, such as coherence (e.g., Irigaray, 1973) or T-units (e.g., Ulatowska et al., 1983). However, those concepts and descriptors were not connected with a broader conceptual framework of discourse. Only recently have general integrative discourse models made it possible to link these various discourse components and to capture the different levels of cognitive processing needed in order to convey or understand verbal communication. This article summarizes discourse impairments associated with different pathological conditions with reference to these integrated frameworks.