Since 1998, the National Prevalence Measurement of Care Problems (LPZ) has annually measured the prevalence, prevention and treatment of a number of care problems in many health care organisations. These problems include pressure ulcers, incontinence, intertrigo, malnutrition, falls and the use of restraints. This article describes trends in the prevalence of these problems during the past few years and the preventive and treatment measures taken for clients residing in psychogeriatric and/or somatic wards of nursing homes. The results show that the prevalence of these care problems has declined in general. Nevertheless, the individual interventions (preventive measures and treatment) have not really changed in recent years. It is concluded that the extra attention paid to these care problems might already have had a positive effect on their prevalence. This must be further investigated. In any case, extra follow-up steps need to be taken to bring about a further decline. The article describes which steps the project group has already taken in this respect.