SQ-LIP-000011 · v1.0 (current) · machine-readable JSON →
What is known about the inflammation and pain mechanism in lipedema tissue?
Tissue studies report elevated histamine and a dominant M2 macrophage signature in affected gluteofemoral fat, and quantitative sensory testing shows a distinctive pain pattern in the limb. These are independent observations from small studies; they describe correlates of the disease, not a proven causal mechanism.
Knowledge freshness = share of the 3 indexed evidence sources from the last 5 years (newest 2024, oldest 2022) . Low freshness flags an ageing evidence base — not that the answer is wrong.
Evidence over time
supporting contradicting refining / context Each dot is a study, placed by year and coloured by whether the linked claim supports or contradicts the answer. As the surveillance loop runs, claim revisions and new evidence will extend this timeline.
Choose a format (Vancouver default). Citing a version captures the evidence state on that date; this page shows the current version — see version history.
What changed in this version
Initial version (v1.0): 3 founding claims indexed from the lipedema pilot. The automated surveillance loop (new-article ingestion → supports / contradicts / refines) has not yet run.
Supporting claims
- SCR-LIP-000041 supporting
Lipedema-affected gluteofemoral adipose tissue shows elevated tissue histamine (~2.2-fold vs controls) in a preliminary metabolomic study.
DOI:10.7417/CT.2023.2496 - SCR-LIP-000042 supporting
Lipedema gluteofemoral adipose tissue displays a dominant M2 macrophage transcriptomic signature with CD163+ macrophage enrichment (2.58-fold by qPCR; 1171 differentially expressed genes), indicating a type-2 immune microenvironment.
DOI:10.3389/fimmu.2022.1004609 - SCR-LIP-000043 supporting
Lipedema has a distinctive quantitative sensory testing (QST) signature in the affected limb — isolated lowered pressure pain threshold and raised vibration detection threshold with spared thermal thresholds — yielding high diagnostic accuracy (PVTH-score AUC 0.958).
DOI:10.1097/PR9.0000000000001155
Contradictory claims
- None indexed yet.
Major uncertainty
Small, mostly unreplicated tissue studies; correlational, mechanism not established.
Version history
- SQ-LIP-000011 · v1.0 — 2026-05-30 — founding index (3 claims) · view this version
Key references
DOI:10.7417/CT.2023.2496 · DOI:10.3389/fimmu.2022.1004609 · DOI:10.1097/PR9.0000000000001155