✳PetwellPET HEALTH REFERENCE
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CONDITION REFERENCES

Condition reference index

Find related reading from common presentations. These are knowledge references, not diagnoses.

Digestive

Gastroenteritis reference

Vomiting, diarrhea, appetite loss, low energy, or dehydration can map to gastroenteritis references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • AAHA Clinical Practice Guidelines ↗American Animal Hospital Association · Legacy resource; claim mapping pending
Pancreatitis reference

Vomiting, belly pain, appetite refusal, weakness, or illness after rich food can map to pancreatitis references.

Foreign body obstruction reference

Possible foreign object ingestion, repeated vomiting, retching, belly swelling, belly pain, or stool change can map to obstruction references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • ACVS Animal Health Topics ↗American College of Veterinary Surgeons · Legacy resource; claim mapping pending
Constipation reference

Difficulty passing stool, straining, no stool for more than a day or two, or painful stool passage can map to constipation references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • AAHA Clinical Practice Guidelines ↗American Animal Hospital Association · Legacy resource; claim mapping pending

Skin

Ringworm / dermatophyte reference

Round hair loss, scaling, crusting, or multi-pet skin problems can map to ringworm and dermatophyte references.

Bacterial skin infection / pyoderma reference

Redness, hot spots, oozing, crusting, pain, or ongoing licking can map to bacterial skin infection and pyoderma references.

Allergic dermatitis / flea allergy reference

Itching, licking, rash, face swelling, flea exposure, or recurrent skin flares can map to allergic dermatitis and flea allergy references.

Eye / ear

Conjunctivitis / corneal disease reference

Red eye, eye discharge, squinting, rubbing, watery eye, or cloudiness can map to conjunctivitis and corneal disease references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • AAHA Clinical Practice Guidelines ↗American Animal Hospital Association · Legacy resource; claim mapping pending
Cataract / eye cloudiness reference

Cloudy eyes, vision change, or bumping into objects can map to cataract and eye-cloudiness references.

Otitis / ear mites reference

Head shaking, ear discharge, odor, pain when touched, or balance change can map to otitis and ear mite references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • AAHA Clinical Practice Guidelines ↗American Animal Hospital Association · Legacy resource; claim mapping pending
  • CAPC Pet Owner Resources ↗Companion Animal Parasite Council · Legacy resource; claim mapping pending

Urinary / kidney

Feline urinary obstruction / lower urinary tract disease reference

Frequent litter box trips, small urinations, blood in urine, crying, or no urine in cats can map to feline urinary obstruction and lower urinary tract references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • International Cat Care Advice ↗International Cat Care / ISFM · Legacy resource; claim mapping pending
Cystitis / urinary tract infection / crystals / stones reference

Frequent small urinations, blood, painful urination, or new urine accidents can map to cystitis, UTI, crystals, and stones references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • AAHA Clinical Practice Guidelines ↗American Animal Hospital Association · Legacy resource; claim mapping pending
  • International Cat Care Advice ↗International Cat Care / ISFM · Legacy resource; claim mapping pending
Kidney disease reference

Increased thirst, urination change, weight loss, appetite loss, or low energy can map to kidney disease references.

Chronic kidney disease

Changes in thirst, urination, appetite, weight, vomiting, or energy can be important clues and need veterinary context.

Infectious

Feline panleukopenia

In young or incompletely vaccinated cats, vomiting, diarrhea, appetite loss, or weakness makes severe infectious disease such as panleukopenia a reference concern.

  • Cornell Feline Health Center ↗Cornell University College of Veterinary Medicine · Legacy resource; claim mapping pending
  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • WSAVA Global Guidelines ↗World Small Animal Veterinary Association · Legacy resource; claim mapping pending
Feline herpesvirus upper respiratory disease

Sneezing, nasal discharge, eye discharge, or red eyes in cats can map to feline upper respiratory disease references including herpesvirus.

  • Cornell Feline Health Center ↗Cornell University College of Veterinary Medicine · Legacy resource; claim mapping pending
  • International Cat Care Advice ↗International Cat Care / ISFM · Legacy resource; claim mapping pending
  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
Feline calicivirus-associated respiratory or oral disease

In cats, respiratory signs with drooling, oral pain, or appetite refusal can map to calicivirus-related reference content.

  • Cornell Feline Health Center ↗Cornell University College of Veterinary Medicine · Legacy resource; claim mapping pending
  • International Cat Care Advice ↗International Cat Care / ISFM · Legacy resource; claim mapping pending
  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
Feline infectious peritonitis reference

In cats, ongoing low energy, appetite loss, weight loss, belly enlargement, or fever-like signs can map to complex infectious disease references such as FIP.

FeLV/FIV reference

Recurrent low energy, weight loss, oral disease, infection-like signs, or enlarged lymph-node areas in cats can map to FeLV/FIV reference content.

Canine distemper reference

In young or incompletely vaccinated dogs, nasal or eye discharge, cough, fever-like signs, diarrhea, or neurologic signs can map to distemper references.

Canine parvovirus reference

Vomiting, watery or bloody diarrhea, appetite refusal, or weakness in young or incompletely vaccinated dogs can map to parvovirus references.

Canine coronavirus enteritis reference

Diarrhea and vomiting in dogs, especially puppies or group-exposure settings, can map to infectious enteritis references including canine coronavirus.

Kennel cough / canine infectious respiratory disease reference

Cough in dogs, especially after boarding, daycare, or dog-group exposure, can map to kennel cough or infectious respiratory disease references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • WSAVA Global Guidelines ↗World Small Animal Veterinary Association · Legacy resource; claim mapping pending
Canine influenza reference

Cough, nasal discharge, fever-like signs, or low energy after dog-group exposure can map to canine influenza and infectious respiratory references.

Respiratory

Upper respiratory infection reference

Sneezing, nasal discharge, eye or nose discharge, cough, or fever-like signs can map to upper respiratory infection references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • Cornell Feline Health Center ↗Cornell University College of Veterinary Medicine · Legacy resource; claim mapping pending
  • International Cat Care Advice ↗International Cat Care / ISFM · Legacy resource; claim mapping pending
Bronchitis / pneumonia reference

Cough, fast breathing, fever-like signs, low energy, or exercise intolerance can map to bronchitis and pneumonia references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • ACVIM Specialist Resources ↗American College of Veterinary Internal Medicine · Legacy resource; claim mapping pending
Feline asthma / lower airway disease reference

Wheezing, cough, breathing effort, or exercise intolerance in cats can map to feline asthma and lower airway disease references.

Bone / injury

Fracture / sprain / trauma reference

Hit-by-car, falls, bleeding, wounds, limping, or not bearing weight can map to fracture, sprain, and trauma references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • ACVS Animal Health Topics ↗American College of Veterinary Surgeons · Legacy resource; claim mapping pending
Arthritis / patellar luxation / hip disease reference

Recurrent limping, worse after activity, reluctance to jump, difficulty rising, or chronic pain can map to arthritis, patella, and hip references.

Intervertebral disc / spinal neurologic reference

Back pain, weak rear legs, reluctance to walk, sudden pain, or neurologic signs can map to spinal and intervertebral disc references.

  • ACVS Animal Health Topics ↗American College of Veterinary Surgeons · Legacy resource; claim mapping pending
  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
Osteoarthritis and chronic joint pain

Slower rising, avoiding stairs, limping, or less grooming and play can indicate pain even without crying.

  • AAHA Clinical Practice Guidelines ↗American Animal Hospital Association · Legacy resource; claim mapping pending
  • AVMA Pet Owner Resources ↗American Veterinary Medical Association · Legacy resource; claim mapping pending
  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.

Dental / oral

Dental tartar / gingivitis / periodontal disease reference

Bad breath, loose teeth, trouble chewing, drooling, or mouth bleeding can map to dental tartar, gingivitis, and periodontal disease references.

Stomatitis / oral pain reference

Drooling, appetite refusal, oral pain, mouth bleeding, or oral swelling can map to stomatitis and oral pain references.

Periodontal and dental disease

Bad breath, tartar, drooling, chewing changes, or dropping food can be signs of oral pain.

Toxins / accidents

Toxin exposure: medication, chocolate, onion, grapes, lilies, rodenticide, cleaners reference

Medication, chocolate, grape, onion, lily exposure in cats, rodenticide, or cleaner exposure maps directly to toxin and accident references.

  • ASPCA Animal Poison Control ↗ASPCA · Legacy resource; claim mapping pending
  • FDA Animal & Veterinary Resources ↗U.S. Food and Drug Administration · Legacy resource; claim mapping pending
  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
Heatstroke / heat injury and accident reference

Heat exposure, fast breathing, weakness, collapse, hit-by-car, or falls can map to heat injury and accident references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • WSAVA Global Guidelines ↗World Small Animal Veterinary Association · Legacy resource; claim mapping pending

Parasites

Intestinal parasites: roundworm, tapeworm, hookworm, coccidia reference

Worm-like segments, diarrhea, soft stool, young age, or uncertain prevention can map to intestinal parasite references.

External parasites: fleas, ticks, mites reference

Itching, hair loss, flea dirt, tick exposure, itchy ears, or crusting can map to flea, tick, ear mite, or mange references.

Heartworm reference

Uncertain prevention, mosquito exposure, cough, exercise intolerance, or breathing change can map to heartworm references.

Tumors

Tumor / mammary tumor / lymphoma / skin tumor reference

New lumps, rapid growth, ulceration, mammary lumps, or enlarged lymph-node areas can map to tumor-related references.

Behavior / neuro

Anxiety / aggression / separation-related behavior reference

Anxiety, hiding, sudden aggression, separation-related changes, or behavior change can map to behavior references while prompting medical rule-out.

Inappropriate urination: behavior or urinary disease reference

New inappropriate urination may be behavioral stress or urinary disease, so it maps to both behavior and urinary references.

Epilepsy / seizure reference

Seizure, rigid body, repeated episodes, collapse, or disorientation after an episode can map to seizure and epilepsy references.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • ACVIM Specialist Resources ↗American College of Veterinary Internal Medicine · Legacy resource; claim mapping pending
Vestibular signs / cognitive dysfunction reference

Head tilt, circling, balance loss, abnormal eye movement, getting lost, or day-night reversal can map to vestibular and cognitive references.

Seizure disorder reference

The first seizure, a changing pattern, prolonged episodes, or repeated seizures needs veterinary assessment.

  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.
  • Merck Veterinary Manual: Pet Owners Overview ↗Merck Veterinary Manual · Legacy resource; claim mapping pending
  • AVMA Pet Owner Resources ↗American Veterinary Medical Association · Legacy resource; claim mapping pending

Heart

Cardiomyopathy / valve disease / heart failure / hypertension reference

Cough, exercise intolerance, fast breathing, ascites/pleural fluid/pulmonary edema clues, collapse, or abnormal gum color can map to cardiovascular disease references.

  • ACVIM Specialist Resources ↗American College of Veterinary Internal Medicine · Legacy resource; claim mapping pending
  • Merck Veterinary Manual: Pet Owners Overview ↗Merck Veterinary Manual · Legacy resource; claim mapping pending
  • Merck Veterinary Manual: When to See a Veterinarian ↗Merck Veterinary Manual · Editorial check: 2026-10-12 · Source date: Not clearly stated on source
    Supports immediate-care warning signs such as breathing difficulty, white or blue gums, severe or constant pain, seizures, bloody or uncontrollable diarrhea, black stool, and straining without urine. It does not independently support diagnoses, treatments, or all historical triage rules.

Endocrine

Obesity / weight management reference

Weight gain, reduced activity tolerance, or long-term diet-management concerns can map to obesity and weight management references.

Diabetes reference

Increased thirst and urination, weight loss, appetite change, or low energy can map to diabetes references.

Thyroid / Cushing / adrenal disease reference

Weight, thirst, urination, appetite, energy, or coat changes can map to thyroid, Cushing-like, and adrenal references.

Diabetes mellitus

Increased thirst or urination, weight loss despite eating, and weakness are reasons to arrange a veterinary examination.

Feline hyperthyroidism

Older cats that lose weight despite eating, drink more, vomit, or become restless should be examined.

Reproductive

Pyometra reference

An unspayed female with low energy, vaginal discharge, vomiting, fever-like signs, or increased thirst can map to pyometra references.

Mastitis / false pregnancy / mammary concern reference

Mammary swelling or pain, mammary lumps, possible pregnancy, or postpartum concerns can map to mastitis, false pregnancy, and mammary references.

Testicular / prostate concern reference

Testicle swelling or pain, straining to urinate or defecate, or rear-end discomfort can map to testicular and prostate references.