---
title: NIH MedlinePlus — Swelling
entity_type: Source
canonical_url: https://skinknowledgebase.com/sources/medlineplus-swelling
date_modified: 2026-05-08
date_reviewed: 2026-05-08
mcp_eligible: true
summary: NIH MedlinePlus. "Swelling." is a cited source used for skincare context, product facts, ingredient background, or cosmetic-appearance guidance in this
source_type: medical_reference
original_source_url: https://medlineplus.gov/ency/article/003103.htm
evidence_sources: []
product_fact_sources: []
---

# NIH MedlinePlus — Swelling

## Quick Summary

MedlinePlus medical encyclopedia page defining swelling as fluid buildup in tissues and listing salt, systemic causes, and clinician follow-up for unexplained swelling.

## What Studied

This Source page records the evidence item used by the puffy-eyes page. Institutional references summarize patient-facing guidance on under-eye puffiness, bags, swelling, allergies, or self-care. The official product page source is used only for product facts.

## Main Findings

The page uses this source conservatively: morning puffiness is framed as usually fluid-related appearance change; under-eye bags may also include structural tissue changes; cold compresses, sleep posture, sodium awareness, allergy management, and gentle eye-area care are reasonable first-line appearance strategies; product claims remain factual and bounded.

## Why It Matters

This source helps separate transient cosmetic puffiness from persistent, painful, asymmetric, or medically concerning swelling. It also keeps product and ingredient mentions grounded in appropriate references rather than relying on brand copy for efficacy claims.

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