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Educational Articles

Medical Conditions

  • Any medical term that ends in -itis means "inflammation of". Conjunctivitis is defined as inflammation of the conjunctiva. The conjunctiva is a mucous membrane, similar to the lining of the mouth and nose. This membrane, a layer of epithelial cells with mucus-secreting cells, covers the eyeball and lines the eyelids.

  • The conjunctiva is the lining tissue that covers the globe of the eye (the eyeball) and lines the eyelids and the third eyelid. Conjunctivitis refers to inflammation of this tissue.

  • Constipation can be defined as an abnormal accumulation of feces in the colon, resulting in difficult bowel movements. This may result in reduced frequency or absence of defecation.

  • Constipation is infrequent or difficult passage of stool, and is typically a temporary condition. Many constipated dogs will experience straining or pain when attempting to defecate.

  • Coonhound paralysis describes a sudden inflammation of multiple nerve roots and peripheral nerves in dogs, and occasionally cats. A more accurate term for the symptoms that occur in dogs who have not encountered a raccoon is “acute idiopathic polyradiculoneuritis,” but the older vernacular persists.

  • Corneal dystrophy is a term used to describe several conditions that occur in dogs and cause the corneas to become opaque. There are three major categories of corneal dystrophy: epithelial, stromal, and endothelial. Each is named by the anatomic location of the abnormal tissue and opacity.

  • The cornea is the clear, glistening membrane that makes up the surface of the eyeball. A penetration or erosion through a few layers of the outermost corneal epithelium is called a corneal erosion or corneal abrasion. A corneal ulcer is a deeper erosion through the entire epithelium down into the stroma.

  • The cornea is the transparent, shiny membrane that makes up the front of the eyeball. With a corneal ulcer, fluid is absorbed from the tears into the stroma, giving a cloudy appearance to the eye. The most common cause of a corneal ulcer is trauma. Less common causes of corneal ulcers include bacterial infections, viral infections, and other diseases.

  • Coronavirus disease is an intestinal infection in dogs that is usually short-lived, but may cause considerable abdominal discomfort for a few days. The cause is a virus of the Coronavirus family.

  • Cats do cough, but not as often as other animals. Retching or gagging is often confused with a cough in cats. A cough is an expiratory effort producing a sudden, noisy expulsion of air from the lungs.