The project focuses on non-compliance in patients with systemic lupus erythematosus taking Plaquenil. More than half of patients with chronic illness are not or only poorly compliant with their treatment and lupus is one of them. The investigators want to use an already validated existing questionnaire in English, the Morisky Medication Adherence Scale 8 (MMAS 8). These results will make it possible, after a multivariate study with reference to the gold standard which is hydroxychloroquinemia, to see which exact questions in the questionnaire can be used in general medicine practices in order to detect less or non-compliant patients as early as possible.