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  • Progressive retinal atrophy (PRA) is a group of degenerative diseases that affect photoreceptor cells in the eyes. With this disease, the cells deteriorate over time, eventually leading to blindness. There are two main forms of PRA recognized in cats, an early-onset, inherited form called retinal dysplasia, and a late-onset form. PRA is an inherited condition in Abyssinian and Persian cats. When a cat develops PRA, it should be removed from the breeding program, along with its parents and siblings. As PRA progresses, your cat's vision gradually worsens until she becomes completely blind. There is currently no effective treatment for PRA.

  • Medical waste includes needles, syringes, body parts, bodily fluids, feces and medications among other things. This handout addresses some of the ways such waste can be safely disposed.

  • Tumors of the prostate are relatively uncommon in dogs and extremely rare in cats. Clinical signs include bloody urine, or straining to urinate or defecate. Metastasis to the pelvic bone and/or lumbar spine is likely. Diagnosis and treatment options are discussed. Prognosis is considered poor.

  • Prostatic disease in cats is uncommon and, as a result, relatively little is known about these conditions. Enlargement of the prostate is a common sign with most prostatic diseases and may be noted by your veterinarian on a rectal exam. Other diagnostic tests may be required to determine the cause of your cat's condition.

  • The word enteropathy means any disease of the intestinal system. Protein-losing enteropathy (PLE) is not a specific disease, but rather describes a group of diseases that cause the loss of proteins from the bloodstream into the gastrointestinal (GI) tract.

  • Pulmonary hypertension means that the peak blood pressure in the arteries of the lungs is much higher than normal. Several abnormalities can lead to high blood pressure in the arteries of the lungs and many of the underlying reasons involve the heart. There are many signs of pulmonary hypertension including exercise intolerance, difficulty breathing with or without exertion/exercise, rapid breathing, coughing, spitting up blood from the lungs, fainting, and more. There are many potential causes of pulmonary hypertension. Several medications are available to treat your cat. Activity may need to be restricted. It is essential to monitor cats with pulmonary hypertension for worsening of clinical signs. Periodic physical examinations, blood pressure monitoring, and ultrasound evaluations of the heart are also important. The long-term prognosis is very guarded for cats with pulmonary hypertension.

  • Pyelonephritis is an upper urinary tract infection involving the kidneys and ureters. Many cats have no clinical signs when they have pyelonephritis, although they may have signs of lower urinary tract disease. Pyelonephritis is usually caused by a bacterial infection that moves up the urinary tract from the bladder to the kidneys. Cats with sudden pyelonephritis do well and return to normal health unless concurrent complications exist.

  • Pyometra is a serious and life-threatening infection in the uterus, occurring in female cats who have not been spayed. The condition must be treated quickly and aggressively. The preferred treatment is to surgically remove the uterus and ovaries by performing an ovariohysterectomy. There is a medical approach to treating pyometra, although the success rate is highly variable and not without considerable risk and potential long-term complications. 

  • Pyothorax is the presence of inflammatory fluid or pus within the chest cavity, which is the area between the lungs and the inner walls of the ribs. Signs of pyothorax include rapid, shallow, open-mouthed breathing that may be painful, depression, lethargy, decreased appetite. Clinical examination by a veterinarian, particularly listening to the chest with a stethoscope, may indicate fluid in the chest.

  • Pyrantel pamoate is given by mouth and is used on and off label to treat intestinal parasites in many species. Give as directed. Side effects are uncommon but may include stomach upset, such as vomiting or diarrhea. Do not use in pets that are allergic to it. If a negative reaction occurs, call your veterinarian.