Rare diseases · Sign or symptom

Lymphedema

Swelling caused by excess lymph fluid under skin

HP:0001004

What it means

Localized fluid retention and tissue swelling caused by a compromised lymphatic system.

In everyday care

Most people with this sign do not have a rare disease — it appears in common conditions far more often. These general reference pages cover the same topic:

Rare diseases that can present with this53

The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.

Part of the broader category

Also called: Lymphatic obstruction · Lymphoedema · Onset of lymphedema around puberty

Lymphedema

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This page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.