What is Haws Syndrome?

Haws syndrome occurs when a cat's third eyelids become elevated and visible across both eyes simultaneously. Unlike other eye conditions, this syndrome doesn't typically cause pain or permanent damage to the eye, though it may temporarily obstruct your cat's vision.

The third eyelid normally remains hidden in the inner corner of the eye, only becoming visible when there's an issue. In Haws syndrome, these membranes appear as whitish or pink sheets partially covering both eyes, making it a distinctive and easily recognizable condition.

Common Causes and Triggers

While the exact cause of Haws syndrome remains unknown, veterinary research has identified several common associations:

Gastrointestinal disturbances, particularly diarrhea
Intestinal parasites (especially Giardia and tapeworms)
Viral or bacterial infections affecting the digestive system
Food allergies or sensitivities
Stress or environmental changes

The most consistent link appears to be with gastrointestinal issues, suggesting a possible connection between gut health and the nervous system controlling the third eyelid.

Diagnosis and Symptoms

The primary symptom of Haws syndrome is the visible protrusion of both third eyelids. Your veterinarian will typically diagnose the condition based on:

Physical examination of the eyes
Assessment of concurrent symptoms
Review of recent medical history
Possible fecal analysis if GI symptoms are present

Additional symptoms might include mild lethargy, decreased appetite, or digestive issues, though some cats show no other signs beyond the elevated third eyelids.

Treatment and Recovery

The good news is that Haws syndrome usually resolves on its own within 4-6 weeks, though some cases may take up to 3 months. Treatment typically focuses on addressing any underlying conditions:

Managing concurrent gastrointestinal issues
Deworming if parasites are suspected
Supportive care and monitoring
Regular veterinary check-ups if symptoms persist

Most cats recover completely without any specific treatment for the eye condition itself. However, it's important to monitor your cat's progress and consult your veterinarian if symptoms worsen or fail to improve.

Frequently Asked Questions

What causes Haws syndrome in cats and how is it related to diarrhea?

Haws syndrome is frequently associated with gastrointestinal disturbances, particularly diarrhea. While the exact mechanism isn't fully understood, it's believed that GI issues may affect the sympathetic nervous system controlling the third eyelid, leading to its protrusion.

How can I tell if my cat has Haws syndrome versus other eye problems?

Haws syndrome is characterized by the bilateral protrusion of the third eyelids without pain, redness, or discharge. Unlike other eye conditions, both eyes are typically affected equally, and the eyes themselves remain healthy.

Does Haws syndrome in cats require treatment or will it resolve on its own?

Haws syndrome typically resolves on its own within 4-6 weeks without specific treatment. However, any underlying conditions, such as gastrointestinal issues, may need to be addressed by your veterinarian.

Can Haws syndrome affect my cat's vision or cause pain?

While the protruding third eyelids may temporarily obstruct vision, Haws syndrome doesn't cause pain or permanent damage to the eyes. Your cat's actual vision remains unaffected by the condition.

How can I care for a cat with Haws syndrome and prevent future episodes?

Focus on maintaining good digestive health through proper diet and regular parasite prevention. Monitor your cat for GI symptoms and seek veterinary care if problems persist. While prevention isn't always possible, addressing underlying health issues quickly can help manage the condition.

Conclusion

While Haws syndrome can appear alarming, it's typically a benign condition that resolves naturally over time. Understanding its common triggers and maintaining your cat's overall health, particularly digestive wellness, can help manage and potentially prevent future episodes. Always consult your veterinarian if you're concerned about your cat's symptoms or if the condition persists beyond the expected timeframe.

Diseases & Symptoms

Haws Syndrome in Cats: Causes, Symptoms, and Treatment Guide