| Summary: | Myotonic dystrophy type 1 (DM1) is the most common form of muscular dystrophy in adults. It affects many organs and systems besides muscle. Aim of this study was to assess frequency of erectile dysfunction (ED) and hypogonadism, the correlation between them and the impact of ED on quality of life (QoL) in patients with DM1. A series of 25 men (aged from 22 to 58 years) with a diagnosis of DM1 was analyzed. Muscular Impairment Rating Scale (MIRS) was used to assess severity of muscular involvement. Erectile function was assessed using the short form of the International Index of Erectile Function test (IIEF-5). Levels of follicle stimulating hormone (FSH), luteinizing hormone (LH) and testosterone were assessed. All patients completed the Serbian version of the SF-36 questionnaire as a measure of health-related QoL. ED was present in 18 (72%) of patients. Seven (28%) patients were euogonadic, 16 (64%) had compensated hypogonadism and 2 (8%) had primary hypogonadism. ED was somewhat more common in patients with hypogonadism (78% vs. 57%). Mental composite score of SF-36 was lower in patients with ED (p<0.05). Our results showed that 72% of men with DM1 had ED and hypogonadism. Studies with larger number of subjects are needed to resolve cascade of events that lays behind ED in DM1. Development of therapeutic strategies may have positive impact on QoL. Substitutive therapy with androgens may be benefitial.
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