Clinicians do not have any standardized questionnaire to assess the tolerability from the patient's perspective. The tolerability assessment of the different pharmacological strategies for Rheumatoid Arthritis, from the patient's perspective, would provide additional information, improve doctor-patient communication and improve both adherence to and efficacy of treatment. For these reasons, the development and validation of a new tool is necessary not only for future researches, but for use in standard clinical practice.