ABSTRACT:An association of MS with different anaemic syndromes, most often pernicious and Vit. B12 deficiency anaemia has been reported in the literature. Accordingly, the coincidence of anaemia with MS has been considered to impact seriously on clinical presentation, therapeutic strategy and patient's quality of life.Objective: To perform a retrospective analysis of 18 cases with anaemic syndrome as a factor of comorbidity in patients with MS.Material and methods: 18 MS patients (15 women and 3 men) with RRMS (13), PPMS (2), and SPMS (3) diagnosed according to McDonald criteria were included in the present study. Average age was 36.4±8.5 (22-42) years, average disease duration 10.6±6.8 (4-18) years and means EDSS -3.5±2.5 points (2-6). All individuals underwent clinical, MRI and hematological examinations.Results: The study group included patients with pernicious (n=8), Vitamin B12 (n=6), and iron (n=3) deficiency anaemia, as well as with β-thalassemia (n=1). In 12 patients anaemic syndrome proceeded MS and in 6 evolved during the course of the desease.Conclusion: Our own notices and literature review suggests a possible causative relation between MS and anaemic syndrome. The role of this coincidence on clinical presentation, necessity of additional treatment, and patient's quality of life is discussed.