What Is Lyme Disease in Cats?
Lyme disease is a tick-borne disease caused by the bacterial spirochete Borrelia burgdorferi. Ticks do not cause Lyme disease, but
Ticks infected with the Borrelia bacteria bite a cat and spread the parasite through their saliva. Once the tick is attached, it takes 24 to 48 hours for Borrelia to start transmitting through the saliva. In the rare case of cats having clinical signs of Lyme, it is similar to the disease in dogs and may be noticeable two to five months after a tick bite.
Borrelia species are highly specialized at invading the host’s immune system, and animals can have difficulty clearing the bacteria. Borrelia hides in the skin, joints, connective tissue, and nervous system.
Symptoms of Lyme Disease in Cats
Cats rarely have signs of Lyme disease
The most common symptoms, when present, include:
Loss of appetite
Animals with a more severe form of Lyme affecting their kidneys may show:
Edema (swelling caused by excess fluid) in the limbs
Severe cases may cause damage to the nervous system and heart.
Causes of Lyme Disease in Cats
Cats get Lyme disease after being bitten by a tick infected with the bacteria Borrelia burgdorferi. Immature ticks get the bacteria when they are feeding in the fall. The bacteria spreads to cats through the saliva in the tick’s bite, where the Borrelia quickly replicate on the skin and migrate through the cat’s tissues.
Ticks must be attached for 24 to 48 hours before Borrelia is transmitted.
How Veterinarians Diagnose Lyme Disease in Cats
Lyme disease is diagnosed mainly through history, signs of disease, laboratory tests, and ruling out other diseases with similar symptoms. Because Lyme disease is so uncommon in cats, other conditions—like fractures or abscesses—should be eliminated as potential reasons for limping and infection before Lyme disease is considered.
Treatment of Lyme Disease in Cats
While veterinarians use a few medications to treat Lyme disease, the gold standard is the antibiotic doxycycline. However, not all cats can tolerate this antibiotic. Antibiotics are typically prescribed for 30 days, but cats may need more courses in the future to safeguard against flare-ups.
Pet parents should use caution when using doxycycline in cats. In the tablet form, it can cause esophageal strictures—or narrowing, scar-like formations in the esophagus—if it gets stuck.
Some cats may be helped by non-steroidal anti-inflammatories, or other pain relief medications while they are in acute pain from Lyme disease. Typically, animals start feeling better within one or two doses of antibiotics. If cats do not rapidly improve, other diagnoses should be considered.
While most cats can be treated on an outpatient basis, some may need IV fluid therapy, kidney medications, anti-nausea medications, and nutritional support during acute crises. They may require long-term hospitalization for severe cases affecting internal organs.
Recovery and Management of Lyme Disease in Cats
Most cats start feeling better within a day or two after receiving antibiotics. Even though they are feeling better, it is vital to finish the entire course of antibiotics, which is usually a month.
Because Borrelia is good at evading the immune system, it may never be fully cleared. It can hide in joints and other cells in the body, flaring up from time to time. These relapses may require more courses of antibiotics.
Lyme disease in cats is ex
Prevention of Lyme Disease in Cats
While there is a Lyme vaccine for dogs, there is no vaccine for cats.
Lyme disease is zoonotic, which means it can infect humans. However, cats cannot transmit Lyme disease directly to pet parents. An infected tick would need to bite a human.
Lyme Disease in Cats FAQs
Can cats survive Lyme disease?
Yes, the few cats who show signs of Lyme disease typically recover.
How long does it take for a cat to get Lyme disease?
Cats may show signs of illness two to five months after being infected with Lyme disease from a tick.
Is Lyme disease contagious from cats to humans?
Cats cannot transmit Lyme disease directly to humans. However, unattached, infected ticks can be brought into the home by dogs and cats. These ticks may bite and transmit Lyme disease to humans, so tick prevention is crucial for all animals.
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