The long diagnostic delay is a characteristic problem of rare disease patients. Aims: Diagnostic delay was studied in 14 countries by EurordisCare2 involving patient organizations. Methods: 252 Hungarian patients (cystic fi brosis; Duchenne muscular dystrophy; tuberous sclerosis, retinitis pigmentosa, and Williams syndrome) completed the questionnaires. Results: The median delay was longer in Hungary than in Europe (cystic fi brosis: 227 vs. 45 days; Duchenne muscular dystrophy: 467 vs. 360 days; tuberous sclerosis: 155 vs. 120 days). Patients experience was similar in Hungary and in Europe. The proportion of misdiagnosis was 30.8% in Hungary (Europe: 41%), 34.8% of patients got diagnosis outside of living place region (EU: 26%) and 19.9% of them found the personal expenses too high (EU: 10%). Delivery of the diagnosis was unnecessary according to 27.4% of Hungarian patients (EU: 35%). Conclusions: The qualitative survey demonstrated that the problems with the diagnosis of rare diseases are widespread, the identifi ed areas require interventions, and it confi rmed the importance of centralized care.
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