الفهرس 
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Abstract
Stroke is a major global health problem with an estimated incidence rate of around 15 million new cases each year worldwide. Stroke is a leading cause of fatality and long-term disability. It is currently the third leading cause of death preceded only by heart diseases and cancer. Fatality rate increases progressively in the post-ischemic stroke period with an estimated rate of 33% and 80% fatalities in the first year and 10 years, respectively. -fatal stroke usually results in long-term disabilities with grave emotional and economic consequences of the afflicted patients, their families, and the whole community. In general, stroke could be classified into ischemic and hemorrhagic that account for approximately 85% and 15% of all cases, respectively. The aim of the present work was to identify risk factors in different subtypes of recurrent ischemic stroke and to correlate between clinical presentation and radiological findings in each of the previous stroke subtypes. All patients were subjected to complete history, thorough clinical examination and neurological assessment, laboratory investigations including routine investigations and antinuclear antibody, antidouble stranded DNA antibody and anticardiolipin antibody were performed when indicated, imaging including plain X-ray chest, CT and/or MRI pain, and transthoracic echocardiography, Doppler examination of carotid and vertebral arteries, cerebral angiogram when indicated. The results study were no statistical differences in all groups as regard mean body mass index, personal and family histories of previous stroke, and carotid artery disease. There were no statistically significant differences as regard high blood pressure in four groups.