This presentation will focus on evidence-based practices related todifferential diagnosis, assessment for treatment planning, andinterventions for severe speech sound disorders (SSSDs) in children, witha primary focus on severe phonological disorders and childhood apraxiaof speech (CAS). A comprehensive approach based on the ICF-CY(WHO, 2007) is taken in this session because although speech productionproblems are central to children with SSSDs, they frequently co-occurwith equally significant and sometimes more or increasingly significantproblems in overall communication, language and literacy. Therefore,developing strategies for addressing these various challenges as part ofa comprehensive approach is key to successful management.Numerous case-oriented exercises will be used to help participantsimmediately practice working with the concepts being presented.