Is Eales Disease contagious?

Eales Disease is not contagious and cannot be spread from person to person through touch, proximity, or daily interaction. It is an idiopathic inflammatory condition primarily affecting the peripheral retina, and there is no risk of transmission to family members, caregivers, or friends.

What is the underlying cause of Eales Disease?

The exact cause of Eales Disease remains unknown, though it is widely classified as an idiopathic inflammatory retinal vasculopathy. Research suggests that Eales Disease may involve an immune-mediated response, potentially triggered by an underlying hypersensitivity to specific antigens, such as Mycobacterium tuberculosis proteins, even in patients without active systemic tuberculosis. It is not considered a genetic or hereditary condition, and it typically presents in healthy young adults, most commonly males between the ages of 20 and 40.

Why is there confusion regarding the contagiousness of Eales Disease?

The misconception that Eales Disease is contagious often stems from its historical association with tuberculosis. Because some clinical studies have identified a link between ocular inflammation in Eales Disease and exposure to tuberculosis, patients are sometimes incorrectly labeled as "infectious." However, Eales Disease is an inflammatory reaction, not an active infection. You cannot "catch" Eales Disease from someone else, nor can you pass it on through any form of physical contact.

What factors are associated with Eales Disease?

While Eales Disease is not an infectious disease, clinical observations have identified several factors often present in those diagnosed:

• Demographics: It primarily affects young, healthy males, with a male-to-female ratio of approximately 9:1.


• Immune Response: There is often a documented history of exposure to tuberculosis, leading to a localized hypersensitivity reaction in the eye.


• Inflammation: The condition is characterized by peripheral periphlebitis (inflammation of the retinal veins), which can lead to retinal hemorrhages and neovascularization.


• Geography: It was first described in India and remains more frequently reported in South Asia, though it occurs globally.

Next steps

• Schedule regular follow-ups with a retina specialist or ophthalmologist to monitor retinal health.


• Connect with the 23 members of the Eales Disease community on DiseaseMaps.org to share experiences and reduce isolation.


• Consult your physician about screening for systemic inflammatory markers or latent tuberculosis if recommended by your specialist.

Medical disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment.

References

• NIH Genetic and Rare Diseases Information Center (GARD)


• Orphanet: Portal for rare diseases and orphan drugs


• PubMed: Clinical reviews on idiopathic retinal vasculitis


• American Academy of Ophthalmology (AAO) EyeWiki