 Context : The phobia of falling strongly contributes to the frailty of the elderly, and plays a key role in falls occuring and their deleterious effect. It concerns a big part of seniors living at home, fell before or not, and frequently leads to a restriction of their mobility. When the phobia of falling occurs, the fear of falling down takes an excessive scope, it is associated with anxious reactions when seniors dread the risk, and leads them to avoid these situations reducing their mobility. This reduction of activities contributes to the premature decline of physical capacities, worsens social life, increases the falling and institutionalization risk. However, there is no specific tools for the detection of seniors falling phobia, enabling us to turn patients towards a therapeutic and diagnostical adapted care. A detecting self-questionnaire was thus designed by the research geriatric team after an analysis of the literature and half-directive interviews with a representative sample of the target population. 