Kirsten McCarthy / Cats.com
Pandora Syndrome is a fancy dysfunction related to stress and nervousness in cats. It generally entails inappropriate urinary conduct however might embody many different indicators and signs too.
Fast Overview: Pandora Syndrome in Cats
Different Names: Some might consult with feline idiopathic cystitis (FIC) or sterile cystitis as the identical situation
Frequent Signs: Inappropriate urination, inappropriate defecation, hiding, aggression, extreme grooming. In nearly all instances, indicators wax and wane, related to aggravating occasions.
Requires Ongoing Treatment: Typically
Vaccine Obtainable: No
Therapy Choices: Multimodal Environmental MOdification (MEMO) is the core strategy. Different remedies depend upon secondary circumstances which are a part of Pandora Syndrome (whether or not urinary, digestive, pain-related, or requiring nervousness remedy)
Dwelling Therapy: Comply with the 1 + 1 rule for all valued sources (litter 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 be certain that to seek the advice of your veterinarian for medical remedy choices.
On this article, we’ll overview the place the time period Pandora Syndrome comes from, what the dysfunction entails, and methods you need to use at residence to alleviate its results in your cat.
What Is Pandora Syndrome?

Pandora syndrome at its core is a stress and nervousness dysfunction of cats. katamount / Shutterstock.com
Pandora Syndrome is a big encompassing dysfunction of stress and nervousness seen in cats. As a syndrome, it contains a wide range 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 known 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). This can be a sterile (non-infected) bladder irritation of an unknown trigger, however considered associated to emphasize.
The OSU researchers found of their research that lots of the cats with FIC additionally had another issues in widespread. 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 setting through the research.
This led to the conclusion FIC in cats was not attributable to a selected bladder illness, however as an alternative by another illness of the physique affecting the bladder secondarily.
This appeared to reflect the same situation in individuals known 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 parts, the time period for Pandora Syndrome is derived from the various complicated issues which are 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 persistent notion of menace.
The a part of the physique chargeable for serving to a person address stress and nervousness 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 mix of hormones and neurologic responses.
Most are conversant in combat or flight response in animals. In response to hazard or life-threatening conditions, the physique will induce this response, which entails an elevated coronary heart price, pupil dilation, elevated blood sugar and blood circulate to the muscular tissues, and different responses. Rational thought and choice making is changed with response. As soon as the menace is gone, the physique’s responses return to regular.
With persistent stress, if the CSRS is chronically activated, it might probably grow to be overworked, resulting in issues with hormone signaling, the nervous system, and the immune system.
For persistent stress to be current, there solely must 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, adjustments can occur not simply within the urinary tract however different physique techniques as properly 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 might return to being a kitten competing for sources and survival at a younger age. NatalyF / Shutterstock.com
At its core, Pandora Syndrome is attributable to persistent 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 beginning. 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 result in the syndrome.
There are some widespread life stressors which were discovered to contribute to cats creating Pandora Syndrome. These might embody however should not restricted to:
- Affected kittens being orphaned/weaned early from their mother
- Early weaning or abandonment resulting in the necessity for bottle feeding
- Poor vitamin/malnutrition
- Meals/useful resource competitors (both in multi-cat households or colonies)
- Competitors for litter containers
- Competitors for secure areas, quiet locations, and so forth.
- Rehoming/inconsistent residence setting
- Poor environmental stimulation/enrichment
- One other persistent bodily illness affecting well being
- One other cat within the residence affected by a persistent illness or stress
- Abuse or neglect
- Power ache or discomfort
It’s vital to grasp that many cats could possibly adapt to and address stressors of their lives of 1 form or one other.
However in cats with Pandora Syndrome, along with a number of stressors being current of their lives, in addition they have an innate incapacity to deal with this stress usually. This has led to Pandora Syndrome additionally being known as a maladaptive stress dysfunction, the place a cat maybe genetically is incapable of responding to a number of stressors in the identical means as one other cat. Some consult with this as a cat being “wired” poorly to reply to stress.
It is usually potential for one stressor to be so extreme (reminiscent of a cat residing in a secure residence for a very long time immediately being deserted) that Pandora Syndrome might 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 techniques might be affected, resulting in different indicators of sickness as properly.
In his article on the subject, Dr. Buffington lists the next as indicators that could 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 pimples, atopic dermatitis (pores and skin allergic reactions), behavioral ulcerative dermatitis
- Urinary: urinary bladder stones, interstitial/idiopathic cystitis (FIC), periuria, persistent kidney illness
It’s vital to understand that 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 might wax and wane. This can be a widespread discovering and thought of an vital standards for contemplating Pandora Syndrome. For instance, inappropriate urination might include 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 might happen with diarrhea or defecating outdoors of the field.
These adjustments could also be related to identified stressors (shifting to a brand new residence, a brand new pet being launched, a big “disruptive” occasion on the home, building close by, and so forth.). However generally, the stressors are a lot much less clear and the waxing/waning indicators might even go unnoticed by cat house owners at residence.
If the stressors are fixed, cat mother and father might then establish the problem as a recurring or constant downside. This could be a cat urinating everywhere in the home, not consuming their meals constantly, having persistent 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 applicable testing to search for different widespread issues that may be dominated out. Within the instance of inappropriate urination, this would come with a urinalysis to test for an infection and urinary crystals, bloodwork to test for underlying issues that trigger urinary adjustments (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 consists of some inclusion and exclusion standards to assist slim down if Pandora Syndrome could also be current:
Exclusion Standards (Pandora Syndrome is Much less Seemingly)
- Different diagnosable causes of indicators
- Incompatible historical past, bodily examination findings, labwork, imaging, and so forth.
- Explainable peripheral pathology
Inclusion Standards (Pandora Syndrome Could Be Concerned)
- An opposed expertise in life, particularly early on
- Comorbidity, illness behaviors
- Waxing and waning indicators (particularly in relation to environmental adjustments or occasions)
- World (full) response to Multimodal Environmental MOdification (MEMO)
We’ll focus on the vital parts of multimodal environmental modification (MEMO) shortly, however a cats’ response to MEMO may act as a diagnostic software to see if Pandora Syndrome is current. As Dr. Buffington famous through the OSU research, practically 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 individuals with irritable bowel syndrome typically having no bodily bowel pathology whereas having extreme signs.
Within the case of a cat, this might appear to be a cat with persistent diarrhea with no infectious brokers discovered, and no bowel thickening or lymph node enlargement to help 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 vital for multi-cat households the place detailed data for different cats within the residence might be simply as vital. Sickness and behaviors in different cats within the residence could also be contributing as stressors.
Questions your vet might ask and/or issues which are vital 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 containers within the residence
- Quantity and placement of different sources (meals, water, hiding locations, toys, and so forth.)
- Different pets within the residence
- Sicknesses or circumstances different pets within the residence might have
- Exercise/play/socialization time
- The presence of environmental enrichment gadgets (scratching posts, window perches)
Therapies for Pandora Syndrome

Offering an enriched setting to your cat is one strategy to treating pandora syndrome. RJ22 / Shutterstock.com
There isn’t one single remedy for Pandora Syndrome, since it might probably embody a number of indicators of sickness.
For secondary diseases associated to Pandora Syndrome, probably the most applicable drugs for these circumstances will nonetheless be used. For instance, a cat with hypertension (hypertension) will nonetheless want blood strain remedy. A cat with persistent ache will nonetheless want ache remedy.
Some cats might have sickness so extreme that they even require hospitalization. An instance is a cat with FIC that develops a urethral obstruction.
However when treating your entire syndrome as an entire, cats will reply to multimodal environmental modification (MEMO).
Listed below are the parts of MEMO as described by Dr. Buffington.
1. House
Each cat wants their secure area. You might discover that your cat prefers sure areas. 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 children’ 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 constructions of their residence. They want locations to scratch and rub on. Offering each horizontal and vertical scratching surfaces might be vital, even if you happen to assume your cat has a desire.
In case your cat scratches your furnishings, attempt to discover a approach 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 publish to each shield the sofa and supply Annie and Bart with permitted 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 comprises valerian and is one secure and efficient means to offer a chilled impact by means of the plug-diffuser or spray.
2. Meals
Cats want a secure and quiet place to take pleasure in their meal. They shouldn’t be shocked or startled by different animals, individuals, or home equipment whereas they’re attempting 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 rest room could be extra appropriate.
Cats do have their preferences with some preferring moist/moist meals and others preferring dry meals. Watch out of any abrupt adjustments of their meals, together with even the feel or form. When potential, introduce a brand new meals alongside the present meals to gauge your cat’s curiosity in it and forestall 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 arrange for fast and intense searching briefly bursts. It’s vital to attempt to emulate this within the residence setting too. Offering puzzle bowls that require some mind may help decelerate consuming and supply stimulation. You may as well conceal high-value treats round the home utilizing one thing so simple as a bathroom 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 could be lively play with people within the residence, or leaving favourite toys out that they will play with at their discretion. At 16 years, each of my cats nonetheless have a play desire for small stuffed mice.
As a substitute of play, some cats might choose cuddling, petting, and grooming as their social outlet.
4. Battle
When a cat feels threatened, they are going to reply by attempting to revive their notion of management over the state of affairs. However this may look totally different for various cats. Some might grow to be aggressive, others might withdraw and conceal, nonetheless others might develop indicators of sickness.
Battle is particularly vital in multicat households. It’s vital to appreciate that this is not going to all the time appear to be outright hissing, growling, or preventing. Different indicators of battle might embody avoidance of sure components 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 sources
- Entry to scarce sources
- Entry to favourite areas
- Perceived threats as a consequence 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 a lot” might enormously scale back Pandora Syndrome’s affect 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 sources too. RacheeLynn / Shutterstock.com
Multimodal Environmental MOdification (MEMO) is the core strategy to serving to cats with Pandora Syndrome. A optimistic response to MEMO approaches is taken into account very supportive and even confirmatory of the situation. Should you discover indicators of sickness that come and go, particularly urinary indicators, contemplate using as many MEMO approaches as potential.
Listed below are some tricks to make use of MEMO in your house.
- Comply with the 1 + 1 rule for all valued sources. This implies having one for every cat plus one further. This rule applies to litter containers, water bowls, toys, and secure areas.
- Cats are pure water seekers. Rotate at the very least one water bowl to totally different areas 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) be certain that to seek the advice of your veterinarian. These diseases can happen impartial from Pandora Syndrome however even when associated, would require separate medical remedy.
Prevention of Pandora Syndrome in Cats
It’s vital to do not forget that it might not be potential to completely stop Pandora Syndrome. Cats might be affected whereas nonetheless within the womb if their mother was uncovered to environmental stressors whereas pregnant with them. In these instances, a cat might already be poorly “wired” for stress even earlier than they arrive into your care.
However it’s potential to stop flare-ups of sickness related to Pandora Syndrome primarily by means of specializing in multimodal environmental modification (MEMO). Sustaining a constantly enriching setting the place a cat might be positively stimulated however nonetheless really feel secure, impartial, and have entry to sources has proven to be key to quieting down Pandora Syndrome indicators.
-
Buffington, C. A. T. (2018, August 10). Pandora Syndrome in Cats: Analysis and Therapy. Right this moment’s Veterinary Follow. Retrieved February 5, 2025, from https://todaysveterinarypractice.com/urology-renal-medicine/pandora-syndrome-in-cats/
-
Williams, Okay. (n.d.). Pandora Syndrome in Cats. VCA Animal Hospitals. Retrieved February 5, 2025, from https://vcahospitals.com/know-your-pet/pandora-syndrome-in-cats
-
Borchardt, M. (2018, August 30). Pandora Syndrome. Right this moment’s Veterinary Nurse. Retrieved February 5, 2025, from https://todaysveterinarynurse.com/urology-renal-medicine/feline-pandora-syndrome/
-
James, Okay., & 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
-
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
-
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