New Bolton Center Kennett Square, PA
Emergencies & Appointments:
Ryan Hospital Philadelphia, PA
Internal Medicine treats dogs and cats

Symptoms, Diseases & Procedures

What We See and Treat in Internal Medicine

  • Respiratory (breathing) problems

    If your pet is having trouble breathing, please seek emergency veterinary care.

    Some symptoms of respiratory disease

    • Coughing
    • Sneezing
    • Nasal discharge (mucus, snot, phlegm, etc.), bloody nose
    • Excessive panting
    • Exercise intolerance


    • Rhinitis (nasal inflammation)
    • Tracheal collapse
    • Bronchitis
    • Asthma;
    • Pneumonia
    • Pulmonary fibrosis
  • Gastrointestinal problems

    Gastrointestinal problems can be seen with diseases in the gastrointestinal tract, or signify diseases outside of the GI tract.  

    Some symptoms of gastrointestinal disease

    • Trouble swallowing 
    • Regurgitation
    • Vomiting 
    • Diarrhea 
    • Increased stomach growling/noises 
    • Picky/finicky or decreased appetite 
    • Increased appetite 
    • Bloody stool
    • Abnormally colored stool 
    • Jaundice  
    • Weight loss 
    • Constipation 
    • Excess gas/flatulence 


    •  Megaesophagus, esophagitis, esophageal stricture  
    • Gastritis, gastroenteritis, colitis 
    • Gastric ulcer 
    • Inflammatory bowel disease, chronic enteropathy  
    • Protein losing enteropathy 
    • Hepatitis, cholangitis
    • Liver shunt 
    • Increased liver enzymes/values 
    • Gallbladder stones 
    • Pancreatitis 
    • Exocrine pancreatic insufficiency (EPI) 
  • Urinary or kidney problems

    Some symptoms of urinary or kidney disease

    • Drinking excessively 
    • Urinating excessively 
    • Urinating more frequently 
    • Bloody urine, painful urination, straining to urinate
    • Incontinence 


    • Urinary tract infection 
    • Bladder stones 
    • Renal/kidney failure 
    • Protein-losing nephropathy 
    • Nephritis 
    • Glomerulonephritis
    • Ectopic ureters
    • Renal dysplasia
    • Prostatic disease 
  • Endocrine problems

    Some symptoms of endocrine disease

    • Drinking excessively
    • Urinating excessively
    • Increased appetite
    • Weight loss
    • Weight gain
    • Vomiting
    • Diarrhea
    • Panting
    • Hair loss
    • Lethargy or hyperactivity


    • Hyperthyroidism
    • Hypothyroidism
    • Cushing’s disease
    • Addison’s disease
    • Diabetes mellitus
    • Diabetes insipidus
    • Hyperparathyroidism
    • Hypercalcemia
    • Growth hormone disorders
    • Acromegaly
    • Insulinoma
  • Blood disorders

    Some symptoms of blood disorders

    • Lethargy, weakness
    • Pale gums/eyes
    • Bleeding from gums, nose or mouth
    • Bruises


    • Anemia (low red blood cells, low hematocrit)
    • Thrombocytopenia (low platelets)
    • Neutropenia (low white blood cells)
    • ITP, IMHA
    • Coagulopathy
    • Polycythemia
  • Autoimmune disorders

    Symptoms of autoimmune/immune mediated disorders

    Symptoms of autoimmune/immune mediated disorders can be variable and vague, and are related to the system that is affected.


    • Immune-mediated hemolytic anemia (IMHA)
    • Immune-mediated thrombocytopenia (ITP or IMT)
    • Immune-mediated polyarthropathy (IMPA
  • Infectious Diseases

    Symptoms of infectious diseases

    Symptoms of infectious diseases can be variable and vague, and are related to the system that is affected. 


    • FIV (feline immunodeficiency virus) 
    • FeLV (feline leukemia virus) 
    • FIP (feline infectious peritonitis) 
    • Fungal diseases (Cryptococcus, Blastomycosis, Histoplasmosis, Aspergillosis) 
    • Mycobacterial infections 
    • Bartonella 
    • Ehrlichia 
    • Anaplasma 
    • Lyme disease 
    • Leptospirosis 
    • Parasites: Giardia, Coccidia, roundworms 
  • General malaise/pain


    • Weight loss 
    • Lethargy 
    • Decreased appetite 
    • Hiding more (cats)
    • Increased vocalization 
    • Mentation changes

    These signs are non-specific in dogs and cats, and could signify many diseases. Usually, Internal Medicine is the place to start for these cases. 

  • Procedures

    Some veterinarians will refer clients to Internal Medicine to have a specific procedure performed. Some procedures may include:

    • Aspirates
    • Cytology
    • Abdominal ultrasound
    • Endoscopy
      • rhinoscopy
      • bronchoscopy
      • esophagoscopy
      • upper and lower GI endoscopy
    • cystoscopy
    • CT scan
    • Endotracheal or transtracheal wash

Focus: Diabetes Mellitus

Cat being treated for Diabetes, Penn VetRun by Internal Medicine Section Chief Rebecka Hess, DVM, DACVIM, Penn Vet's Diabetes Program strives to improve the lives of cats and dogs diagnosed with Diabetes.

Read more about the Diabetes Program...