Lipedema and obesity: biological interactions, diagnostic challenges, and principles of interdisciplinary management - a narrative review.

Lipedema and obesity are chronic, frequently progressive disorders that can present with increased adipose-tissue volume, functional impairment and reduced quality of life. Although often approached as differential diagnoses, they frequently coexist and may aggravate one another. This narrative review addresses how lipedema and obesity interact biologically and clinically and what evidence supports a staged interdisciplinary approach to diagnosis and management. Obesity is increasingly conceptualized as an adiposity-based chronic disease characterized by excess adipose, abnormal adipose-tissue distribution or dysfunction, and associated medical or functional impairment. Obesity can impair lymphatic morphology and function, whereas lymphatic dysfunction may promote subcutaneous adipose-tissue expansion and fibrosis. Literature was identified through iterative PubMed searches and focused supplementary searches in Embase and the Cochrane Library. Publications were selected purposively for their relevance to predefined clinical and mechanistic domains; no systematic screening or formal risk-of-bias assessment was performed. This review synthesizes clinical overlap, biological evidence, diagnostic implications, and staged management for predominantly adult women with suspected or confirmed lipedema, including those with coexisting overweight or obesity. The proposed framework is intended to support clinical reasoning rather than serve as a formal guideline.