In France, few studies have investigated the experience of home caregivers with elderly people suffering from Alzheimer’s disease or alcoholic behavior. The aim of this study was to describe caregivers' understanding of these disorders to identify their difficulties and satisfactions in relation to their role. Seventeen social care workers were interviewed and the content was analysed using a general inductive approach. Regarding misuse or abuse of alcohol, they expressed a feeling of helplessness, and put forth their experience and skills to communicate with the receiver of care. Concerning Alzheimer’s disease, they expressed worries regarding its progression They identified themselves with the elder’s anxiety, which induced fears regarding their own old age. All of them were satisfied by the care they provided and by the possibility of acquiring experience. Results could be of use in supporting clinical preventive actions for professional home caregivers dealing with these two disorders that can occur in the course of the ageing process.