The high level of unsatisfactory outcome observed in patients treated for LUTS associated with BPH with respect to the different existing therapeutic options strongly emphasizes the need for treatment optimisation in daily practice by a careful LUTS monitoring and treatment adjustment when needed. The poorer outcome observed in patients for whom treatment has been initiated recently suggests that the duration of the disease itself may influence the patient satisfaction.To achieve this goal, we propose to systematically assess LUTS associated with BPH in patients treated for at least 6 months and to assess whether an alpha-blocker therapy initiation/modification may improve the outcome in case of persisting symptoms. We also investigate the influence of the symptom duration on the frequency of unsatisfactory outcome.