
Kirsten McCarthy / Cats.com
Pandora Syndrome is a posh dysfunction related to stress and anxiousness in cats. It generally includes inappropriate urinary conduct however could embody many different indicators and signs too.
Fast Overview: Pandora Syndrome in Cats
Different Names: Some could confer with feline idiopathic cystitis (FIC) or sterile cystitis as the identical situation
Widespread Signs: Inappropriate urination, inappropriate defecation, hiding, aggression, extreme grooming. In virtually all instances, indicators wax and wane, related to nerve-racking occasions.
Requires Ongoing Remedy: Generally
Vaccine Out there: No
Remedy Choices: Multimodal Environmental MOdification (MEMO) is the core method. Different therapies depend upon secondary circumstances which can be a part of Pandora Syndrome (whether or not urinary, digestive, pain-related, or requiring anxiousness medicine)
Residence Remedy: Comply with the 1 + 1 rule for all valued assets (litter packing containers, water bowls, toys, area). Different types of environmental enrichment embody further scratching posts, toys, and window perches. In case your cat is displaying indicators of medical sickness related to Pandora Syndrome make sure that to seek the advice of your veterinarian for medical therapy choices.
On this article, we’ll overview the place the time period Pandora Syndrome comes from, what the dysfunction includes, and methods you should use at residence to alleviate its results in your cat.
What Is Pandora Syndrome?

Pandora syndrome at its core is a stress and anxiousness dysfunction of cats. katamount / Shutterstock.com
Pandora Syndrome is a big encompassing dysfunction of stress and anxiousness seen in cats. As a syndrome, it contains quite a lot of medical indicators and signs and isn’t a singular illness of 1 organ or system.
The time period itself was coined by Dr. Tony Buffington from Ohio State College. In cooperation with different colleagues from OSU, the group developed their theories for Pandora Syndrome whereas investigating a big research group of cats with feline decrease urinary tract illness (FLUTD), which can be referred to as feline urologic syndrome (FUS).
In cats with out urinary tract an infection, bladder stones, or different bodily causes that contribute to FLUTD and FUS, remaining cats have feline idiopathic cystitis (FIC). It is a sterile (non-infected) bladder irritation of an unknown trigger, however regarded as associated to emphasize.
The OSU researchers found of their research that most of the cats with FIC additionally had another issues in frequent. Many had different well being points of their previous, even going again to their earliest years. Many had inconsistent or unstable residence environments, being orphaned, deserted, rescued strays, or in overpopulated environments. Most additionally had important enchancment of their signs when positioned into an enriched atmosphere in the course of the research.
This led to the conclusion FIC in cats was not attributable to a selected bladder illness, however as a substitute by another illness of the physique affecting the bladder secondarily.
This appeared to reflect an analogous situation in folks referred to as interstitial cystitis, the place sufferers have further well being historical past abnormalities that collectively have phrases like “bodily misery syndrome” or “central sensitivity syndrome”.
As a situation with many underlying causes and elements, the time period for Pandora Syndrome is derived from the various advanced issues which can be launched from the legendary field that the character Pandora opens in Greek mythology.
At its core, Pandora Syndrome is an anxiopathy. An anxiopathy is a time period coined to explain a state of illness induced by a continual notion of menace.
The a part of the physique chargeable for serving to a person address stress and anxiousness is known as the central stress response system (CSRS).
The CSRS is located within the mind and is a part of the hypothalamic-pituitary-adrenocortical axis. Basically, this stress response is managed by a mixture of hormones and neurologic responses.
Most are conversant in battle or flight response in animals. In response to hazard or life-threatening conditions, the physique will induce this response, which includes an elevated coronary heart price, pupil dilation, elevated blood sugar and blood circulate to the muscle tissue, and different responses. Rational thought and resolution making is changed with response. As soon as the menace is gone, the physique’s responses return to regular.
With continual stress, if the CSRS is chronically activated, it may possibly grow to be overworked, resulting in issues with hormone signaling, the nervous system, and the immune system.
For continual stress to be current, there solely needs to be the notion of a menace (whether or not one actually exists or not) and the notion of poor management or dominance over the menace.
In cats the place this happens, modifications can occur not simply within the urinary tract however different physique methods as effectively together with the respiratory tract, gastrointestinal tract, and the pores and skin.
Causes of Pandora Syndrome in Cats

For a lot of cats, pandora syndrome could return to being a kitten competing for assets and survival at a younger age. NatalyF / Shutterstock.com
At its core, Pandora Syndrome is attributable to continual activation of the central stress response system (CSRS), resulting in a number of physiological results on the physique.
These causes typically happen very early in life, even previous to delivery. For instance, if a cat’s mom was uncovered to environmental stressors whereas they have been in utero, this stress can have an effect on the kittens. A extreme sufficient stressor at any time in life may also result in the syndrome.
There are some frequent life stressors which were discovered to contribute to cats growing Pandora Syndrome. These could embody however will not be restricted to:
- Affected kittens being orphaned/weaned early from their mother
- Early weaning or abandonment resulting in the necessity for bottle feeding
- Poor diet/malnutrition
- Meals/useful resource competitors (both in multi-cat households or colonies)
- Competitors for litter packing containers
- Competitors for secure areas, quiet locations, and so on.
- Rehoming/inconsistent residence atmosphere
- Poor environmental stimulation/enrichment
- One other continual bodily illness affecting well being
- One other cat within the residence affected by a continual illness or stress
- Abuse or neglect
- Continual ache or discomfort
It’s necessary to grasp that many cats could possibly adapt to and address stressors of their lives of 1 variety or one other.
However in cats with Pandora Syndrome, along with a number of stressors being current of their lives, additionally they have an innate incapacity to deal with this stress usually. This has led to Pandora Syndrome additionally being referred to as a maladaptive stress dysfunction, the place a cat maybe genetically is incapable of responding to a number of stressors in the identical approach as one other cat. Some confer with this as a cat being “wired” poorly to answer stress.
Additionally it is attainable for one stressor to be so extreme (similar to a cat dwelling in a steady residence for a very long time immediately being deserted) that Pandora Syndrome could develop.
Signs of Pandora Syndrome in Cats
Pandora Syndrome is typically described as a urinary tract dysfunction. It’s true that it was initially investigated as a part of a research in cats with decrease urinary tract illness and that FIC is a quite common situation seen in cats with Pandora Syndrome.
However in cats with the dysfunction, different physique methods could be affected, resulting in different indicators of sickness as effectively.
In his article on the subject, Dr. Buffington lists the next as indicators which may be seen in cats with Pandora Syndrome and the physique system they have an effect on.
- Behavioral: hiding, pica (chewing/consuming inedible objects), aggression, periuria (urinating outdoors the litterbox), perichezia (defecating outdoors of the litterbox)
- Cardiovascular: hypertrophic cardiomyopathy, saddlethrombus (feline aortic thromboembolism or FATE)
- Endocrine: weight problems, sort 2 diabetes mellitus
- Gastrointestinal: odontoclastic resorptive lesions (FORLs), regurgitation, vomiting, hairballs, giant bowel diarrhea, perichezia
- Immune: higher respiratory infections
- Dietary: weight problems, finicky consuming
- Pores and skin: overgrooming/barbering, chin zits, atopic dermatitis (pores and skin allergy symptoms), behavioral ulcerative dermatitis
- Urinary: urinary bladder stones, interstitial/idiopathic cystitis (FIC), periuria, continual kidney illness
It’s necessary to needless to say Pandora Syndrome just isn’t completely related to these circumstances and so they can have their very own separate causes. For instance, HCM in sure breeds of cats (like Maine Coons) has been linked to a selected genetic mutation.
Signs in cats with Pandora Syndrome could wax and wane. It is a frequent discovering and regarded an necessary standards for contemplating Pandora Syndrome. For instance, inappropriate urination could encompass a cat who urinates outdoors of the litter field for a couple of days, after which doesn’t do it once more for a few months. The identical could happen with diarrhea or defecating outdoors of the field.
These modifications could also be related to identified stressors (transferring to a brand new residence, a brand new pet being launched, a big “disruptive” social gathering on the home, development close by, and so on.). However generally, the stressors are a lot much less clear and the waxing/waning indicators could even go unnoticed by cat homeowners at residence.
If the stressors are fixed, cat dad and mom could then determine the difficulty as a recurring or constant downside. This is perhaps a cat urinating everywhere in the home, not consuming their meals constantly, having continual diarrhea, having hair loss or pores and skin lesions, or no matter it could be.
Analysis of Pandora Syndrome
Pandora Syndrome is taken into account a analysis of exclusion. As a syndrome that may embody many separate indicators of sickness, there isn’t a particular take a look at to diagnose it.
In case your cat has indicators of sickness, like inappropriate urination, your vet will carry out acceptable testing to search for different frequent issues that may be dominated out. Within the instance of inappropriate urination, this would come with a urinalysis to examine for an infection and urinary crystals, bloodwork to examine for underlying issues that trigger urinary modifications (like kidney illness or diabetes), checking for bladder stones with an x-ray or ultrasound, and ruling out a bladder tumor with ultrasound.
In his article on the subject, Dr. Buffington contains some inclusion and exclusion standards to assist slim down if Pandora Syndrome could also be current:
Exclusion Standards (Pandora Syndrome is Much less Possible)
- Different diagnosable causes of indicators
- Incompatible historical past, bodily examination findings, labwork, imaging, and so on.
- Explainable peripheral pathology
Inclusion Standards (Pandora Syndrome Could Be Concerned)
- An hostile expertise in life, particularly early on
- Comorbidity, illness behaviors
- Waxing and waning indicators (particularly in relation to environmental modifications or occasions)
- International (full) response to Multimodal Environmental MOdification (MEMO)
We’ll focus on the necessary elements of multimodal environmental modification (MEMO) shortly, however a cats’ response to MEMO may also act as a diagnostic device to see if Pandora Syndrome is current. As Dr. Buffington famous in the course of the OSU research, almost all of the cats concerned (about 200) confirmed nice enchancment or decision of their signs when environmental enrichment modifications have been made.
One final consideration is whether or not a cat’s indicators of sickness are disproportionately extreme in comparison with the bodily state of illness that’s discovered. Dr. Buffington makes use of the instance of individuals with ulcerative colitis having signs proportional to the diploma of their illness, however folks with irritable bowel syndrome typically having no bodily bowel pathology whereas having extreme signs.
Within the case of a cat, this might appear like a cat with continual diarrhea with no infectious brokers discovered, and no bowel thickening or lymph node enlargement to assist inflammatory bowel illness and poor response to dietary remedy.
A key a part of diagnosing Pandora Syndrome is a really detailed historical past. That is particularly necessary for multi-cat households the place detailed info for different cats within the residence could be simply as necessary. Sickness and behaviors in different cats within the residence could also be contributing as stressors.
Questions your vet could ask and/or issues which can be necessary to relay embody:
- Life historical past if identified (stray, bottle fed as a kitten, shelter adoption, relocation)
- Historical past of earlier sickness, trauma, or environmental instability
- Any well being historical past involving a number of issues, particularly that wax and wane
- Any perceived affiliation with well being issues and environmental stressors
- Quantity and placement of litter packing containers within the residence
- Quantity and placement of different assets (meals, water, hiding locations, toys, and so on.)
- Different pets within the residence
- Diseases or circumstances different pets within the residence could have
- Exercise/play/socialization time
- The presence of environmental enrichment gadgets (scratching posts, window perches)
Remedies for Pandora Syndrome

Offering an enriched atmosphere in your cat is one method to treating pandora syndrome. RJ22 / Shutterstock.com
There isn’t one single therapy for Pandora Syndrome, since it may possibly embody a number of indicators of sickness.
For secondary diseases associated to Pandora Syndrome, probably the most acceptable drugs for these circumstances will nonetheless be used. For instance, a cat with hypertension (hypertension) will nonetheless want blood strain medicine. A cat with continual ache will nonetheless want ache medicine.
Some cats could have sickness so extreme that they even require hospitalization. An instance is a cat with FIC that develops a urethral obstruction.
However when treating the complete syndrome as a complete, cats will reply to multimodal environmental modification (MEMO).
Listed here are the elements of MEMO as described by Dr. Buffington.
1. House
Each cat wants their secure area. Chances are you’ll discover that your cat prefers sure places. In multi cat houses, chances are you’ll discover that every cat has their very own place they like. For instance, I do know my cat Annie prefers the gray cat mattress on the lounge chair within the basement, the cat tunnel within the eating room, and one of many youngsters’ beds with all of the stuffies on it. Her brother Bart prefers our mattress upstairs. When he’s scared, he prefers a spot within the nook of our closet.
Cats additionally work together with bodily buildings of their residence. They want locations to scratch and rub on. Offering each horizontal and vertical scratching surfaces could be necessary, even should you assume your cat has a choice.
In case your cat scratches your furnishings, attempt to discover a option to both present an in depth by supply that’s most popular, like a cat tree, or use a cat scratch guard. I discovered our cats most popular to scratch vertically on the corners of our sofa, main me to get a twin furnishings protector and scratching submit to each defend the sofa and supply Annie and Bart with authorized locations to scratch away.
Cats are very motivated by scent. Utilizing scents within the residence like catnip, silver vine, or valerian can present a way of calm. Feliway accommodates valerian and is one secure and efficient approach to offer a relaxing impact by the plug-diffuser or spray.
2. Meals
Cats want a secure and quiet place to get pleasure from their meal. They shouldn’t be shocked or startled by different animals, folks, or home equipment whereas they’re making an attempt to eat. Whereas the kitchen is a typical location to incorporate meals and water bowls, if it is a excessive visitors and busy space, a quieter place like a bed room or spare toilet is perhaps extra appropriate.
Cats do have their preferences with some preferring moist/moist meals and others preferring dry meals. Watch out of any abrupt modifications of their meals, together with even the feel or form. When attainable, introduce a brand new meals alongside the present meals to gauge your cat’s curiosity in it and stop a starvation strike.
Cats are instinctual hunters. Many consider them as lazy, sleeping for 16-18 hours a day. However in actuality they relaxation to organize for fast and intense searching in brief bursts. It’s necessary to attempt to emulate this within the residence atmosphere too. Offering puzzle bowls that require some mind may also help decelerate consuming and supply stimulation. You can too cover high-value treats round the home utilizing one thing so simple as a rest room paper roll or a product like The Searching Snacker by Doc and Phoebe’s Cat Co.
3. Play
Along with searching behaviors, cats additionally profit from play and social interplay. This is perhaps energetic play with people within the residence, or leaving favourite toys out that they’ll play with at their discretion. At 16 years, each of my cats nonetheless have a play choice for small stuffed mice.
As a substitute of play, some cats could favor cuddling, petting, and grooming as their social outlet.
4. Battle
When a cat feels threatened, they may reply by making an attempt to revive their notion of management over the scenario. However this could look completely different for various cats. Some could grow to be aggressive, others could withdraw and conceal, nonetheless others could develop indicators of sickness.
Battle is very necessary in multicat households. It’s necessary to comprehend that this won’t all the time appear like outright hissing, growling, or preventing. Different indicators of battle could embody avoidance of sure elements of the home, reluctance to come back out to eat or use a sure litter field.
Battle amongst cats can come up from a number of sources together with:
- A notion of a menace to their standing within the residence
- Entry to excessive worth assets
- Entry to scarce assets
- Entry to favourite places
- Perceived threats on account of sickness in different pets within the residence
- The presence of “visiting” cats outdoors the house (inflicting displaced aggression within the residence among the many indoor cats)
As Dr. Buffington describes, offering a “home of loads” could tremendously cut back Pandora Syndrome’s influence on affected cats.
Cat Care Suggestions

Implement multimodal environmental modification (MEMO) with one further litter field per variety of cats within the residence. Apply the identical rule for different values assets too. RacheeLynn / Shutterstock.com
Multimodal Environmental MOdification (MEMO) is the core method to serving to cats with Pandora Syndrome. A constructive response to MEMO approaches is taken into account very supportive and even confirmatory of the situation. If you happen to discover indicators of sickness that come and go, particularly urinary indicators, contemplate using as many MEMO approaches as attainable.
Listed here are some tricks to make use of MEMO in your house.
- Comply with the 1 + 1 rule for all valued assets. This implies having one for every cat plus one further. This rule applies to litter packing containers, water bowls, toys, and secure areas.
- Cats are pure water seekers. Rotate at the very least one water bowl to completely different places across the residence so as to add further environmental enrichment.
- Different types of environmental enrichment embody further scratching posts, toys, and window perches.
- In case your cat is displaying indicators of medical sickness related to Pandora Syndrome (inappropriate urination, pores and skin circumstances, digestive upset) make sure that to seek the advice of your veterinarian. These diseases can happen impartial from Pandora Syndrome however even when associated, would require separate medical therapy.
Prevention of Pandora Syndrome in Cats
It’s necessary to do not forget that it will not be attainable to completely stop Pandora Syndrome. Cats could be affected whereas nonetheless within the womb if their mother was uncovered to environmental stressors whereas pregnant with them. In these instances, a cat could already be poorly “wired” for stress even earlier than they arrive into your care.
However it’s attainable to stop flare-ups of sickness related to Pandora Syndrome primarily by specializing in multimodal environmental modification (MEMO). Sustaining a constantly enriching atmosphere the place a cat could be positively stimulated however nonetheless really feel secure, impartial, and have entry to assets has proven to be key to quieting down Pandora Syndrome indicators.
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Buffington, C. A. T. (2018, August 10). Pandora Syndrome in Cats: Analysis and Remedy. Immediately’s Veterinary Apply. Retrieved February 5, 2025, from https://todaysveterinarypractice.com/urology-renal-medicine/pandora-syndrome-in-cats/
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Williams, Ok. (n.d.). Pandora Syndrome in Cats. VCA Animal Hospitals. Retrieved February 5, 2025, from https://vcahospitals.com/know-your-pet/pandora-syndrome-in-cats
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Borchardt, M. (2018, August 30). Pandora Syndrome. Immediately’s Veterinary Nurse. Retrieved February 5, 2025, from https://todaysveterinarynurse.com/urology-renal-medicine/feline-pandora-syndrome/
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James, Ok., & Klein, S. (2023, December 3). Sterile Cystitis (Pandora Syndrome) in Cats. Veterinary Accomplice. Retrieved February 5, 2025, from https://veterinarypartner.vin.com/default.aspx?pid=19239&catId=254073&id=10780044
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Bautista-Alejandre, A. (2024, September 4). How Stress Can Trigger Pandora Syndrome in Cats. DVM360. Retrieved February 5, 2025, from https://www.dvm360.com/view/how-stress-can-cause-pandora-syndrome-in-cats
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Pendergrass, J. (2018, Could 19). May Ulcerative Dermatitis in Cats Be Linked to Poor Welfare? DVM360. Retrieved February 5, 2025, from https://www.dvm360.com/view/could-ulcerative-dermatitis-in-cats-be-linked-to-poor-welfare