The impact of prenatal alcohol exposure is far reaching and transgenerational but is largely under diagnosed. This has been a major public health concern but remains an area that has lacked attention with regards service development and research in Ireland. There is a need for mental health professionals to have a good working knowledge of the range of deficits associated with prenatal alcohol exposure. Knowledge of these deficits will facilitate identification of affected children for early diagnosis and intervention. This paper reviews available literature on this topic using broad search criteria. The aim of this article is to create greater awareness among professionals working with children in Ireland considering the high rates of alcohol consumption and the fact that most cases of FASD present with chronic undiagnosed mental health problems.