AIM: To develop an assessment tool for the collection of information on carers' needs and to pilot test same. BACKGROUND: No formal assessment of the needs of carers is undertaken by Public Health Nurses (PHNs) in the West of Ireland. METHOD: An assessment tool which took the form of a questionnaire was designed based on an earlier needs analysis, a literature review and qualitative data obtained with carers at two focus groups. Sixty carers were involved in the pilot study of the tool.