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Summary Lipedema is a painful, chronically progressive disease that is characterized by a symmetrical increase in subcutaneous fat with fluid accumulation on the legs and / or arms. Due to ignorance of the clinical picture, the disease is often not recognized or misinterpreted. Correct diagnosis and treatment are important, however, as the prognosis of the disease can be influenced. A causal therapy for lipedema is not known because the exact etiology is not yet fully understood. A hereditary component is suspected on the basis of a family history of the disease. Since lipedema occurs almost exclusively in women and the onset of the disease is often associated with the onset of hormonal changes (puberty, pregnancy, menopause), In addition, the estrogen is assigned a decisive role in the development. In the present work we present an overview of the symptoms and clinical features of lipedema, its differential diagnoses, treatment options and, lastly, the current hypotheses on the pathogenesis of lipedema.