Are Lymphatic Malformations contagious?

Lymphatic Malformations are not contagious and cannot be spread from person to person through touch, air, or any other form of contact. They are developmental conditions, not infections, meaning there is zero risk to family members, friends, or caregivers when interacting with someone who has a Lymphatic Malformation.

What causes Lymphatic Malformations?

Lymphatic Malformations are rare, non-cancerous developmental anomalies of the lymphatic system. They occur when lymphatic vessels fail to form correctly during fetal development, leading to fluid-filled cysts. These are typically caused by sporadic genetic mutations—most commonly in the PIK3CA gene—that occur after conception. Because these mutations happen during development, a Lymphatic Malformation is not inherited from parents, nor is it caused by anything the parent did or did not do during pregnancy.

Why is there a misconception about contagion?

Because Lymphatic Malformations can sometimes appear as visible masses, swellings, or skin changes, people unfamiliar with the condition may mistakenly assume they are infectious or contagious. This stigma is purely based on a lack of public awareness regarding vascular anomalies. It is important to emphasize that:

• Living with, hugging, or sharing items with someone who has a Lymphatic Malformation is completely safe.


• There are no environmental triggers, such as hygiene or diet, that cause a Lymphatic Malformation to develop or spread.


• The condition does not involve bacteria, viruses, or fungi, and therefore cannot be transmitted.

Are there environmental triggers?

There are no known environmental triggers that cause the formation of a Lymphatic Malformation. While trauma, infection, or hormonal changes (such as puberty or pregnancy) may cause an existing, previously dormant Lymphatic Malformation to swell or become symptomatic, these factors do not create the condition. The underlying structural abnormality is present from birth, even if it is not immediately visible.

Next steps

• Consult with a vascular anomalies specialist or an interventional radiologist for accurate diagnosis and management.


• Join our community at DiseaseMaps.org to connect with the 11 other members currently sharing their experiences with Lymphatic Malformations.


• Educate friends and family using resources from the Lymphatic Education & Research Network (LE&RN) to reduce stigma.

Medical disclaimer: This content is for informational purposes only and does not constitute professional medical advice, diagnosis, or treatment.

References

• NIH Genetic and Rare Diseases Information Center (GARD): Lymphatic malformation.


• Orphanet: Lymphatic malformation (ORPHA:251648).


• Lymphatic Education & Research Network (LE&RN): Understanding vascular anomalies.


• OMIM (Online Mendelian Inheritance in Man): PIK3CA-related overgrowth spectrum.