Abscess in Cats
Written By hannah hollinger
Published: 11/02/2016Updated: 12/03/2021
Veterinary reviewed by Michele K.
Abscess in Cats - Symptoms, Causes, Diagnosis, Treatment, Recovery, Management, Cost
What are Abscess?
Abscesses arise when the body is unsuccessful in fighting off the underlying infection. An abscess usually has a definitive cause, such as poor dental hygiene, trauma, and injury. An abscess may not be life-threatening on its own, but can develop into a severe condition if left untreated.
Abscesses, usually appearing as pus-filled boils, form when the skin or gums become infected.  Dental abscesses form when bacteria invade the root of a damaged or fractured tooth. Skin abscesses usually occur after an injury, most often a bite from another cat.
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Abscess Average Cost
From 232 quotes ranging from $200 - $3,000
Average Cost
$700
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Symptoms of Abscess in Cats
Abscesses are painful and, if left untreated, can lead to the development of serious and even life-threatening infections.  Seek immediate veterinary attention as soon as you notice any of the following symptoms:
  • Signs of pain, such as pawing at the abscess
  • Loss of hair at the abscess location
  • Bad breath
  • Swelling of the face or gums
  • Red, swollen, or inflamed skin
  • Pus or blood on the skin
  • Excessive itching
  • Bleeding gums
  • Loss of appetite
  • Drooling
  • Fever
  • Lethargy
Causes of Abscess in Cats
Abscess is generally caused by injury or infection of the gums or skin. Dental abscesses are typically caused by tooth fracture, damage, or decay. Skin abscesses are generally attributed to fighting activity, but may occur as a result of another form of injury. 
Un-neutered male cats have a higher chance of suffering from abscesses due to their aggressive personalities and tendencies to fight. Indoor cats have a decreased risk of developing abscess compared to outdoor cats for the same reason. Young cats, as well as intact cats and those that have developed abscess in the past, also have a higher risk for forming abscesses.
Diagnosis of Abscess in Cats
Your vet will be able to make a tentative diagnosis following a physical exam based on presentation of symptoms and appearance of boils. Be sure to inform your vet of the extent and duration of your cat’s symptoms, as well as your cat’s outdoor activity and any previous history of abscesses or infection.
The physical examination will usually be sufficient for making a definitive diagnosis. However, your vet may also choose to take a bacterial culture or examine the fluid from the boils using a microscope, particularly if the abscess is difficult to identify. For dental abscesses, your vet may take an x-ray.
Treatment of Abscess in Cats
Treatment will usually involve cleansing or lancing the boil(s) and prescribing an antibiotic regimen. In order to lance the abscesses, your vet will need to sedate your cat and may put a drain in place. This is to prevent the wound from closing back up and sealing in the infection.
Antibiotics are usually prescribed to treat the underlying bacterial infection in both skin and dental abscess. Antibiotic treatments for abscess are generally prescribed for one to three weeks. In some cases, your vet may prescribe pain management medication as well.
For cases of a dental abscess, your vet will likely need to perform dental surgery.  They may also recommend dietary changes. Your vet will discuss treatment options for a dental abscess with you based on your cat’s individual needs.
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Recovery of Abscess in Cats
Recovery and prognosis will depend on whether or not the abscess has caused a more serious condition. For most cases of abscess, the prognosis is generally good with immediate treatment. Always follow your vet’s post-treatment instructions carefully.
Your cat should begin to improve within a few days of treatment, with complete healing typically observed within two weeks. Do not allow your cat to irritate the drain or the surgery site. An Elizabethan collar may help with this.
If your vet has prescribed antibiotics, it is imperative that you administer the medication for the entire recommended duration of treatment even if the condition starts to improve. Failure to do so could result in aggressive recurrence.
Preventative measures are often advised to avoid future recurrence of abscess. For dental abscess, good dental hygiene is imperative. This involves brushing your cat’s teeth daily, giving them dental treats, and eliminating harmful dental habits such as chewing on hard toys or foods. For skin abscess, it is a good idea to limit your cat’s outdoor activity, particularly if they often engage in fights with other cats.
Your vet will schedule a follow-up appointment within two to five days of treatment in order to remove the drain. However, do not hesitate to contact your vet if the condition does not seem to be improving with treatment, if you notice any swelling around the surgery site, or if the condition recurs.
Abscess Average Cost
From 232 quotes ranging from $200 - $3,000
Average Cost
$700
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Abscess Questions and Advice from Veterinary Professionals
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cat
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3 Years
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9 found this helpful

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9 found this helpful

My pet has the following symptoms:
Wound
Cat wound week 1 pic Week 2 pic Light drainage
Dec. 5, 2020
Answered by Dr. Linda S. MVB MRCVS
9 Recommendations
While it's always tricky to assess these things from photos alone, the lesion appears to be healing as there is now less swelling and bruising. If this was a cat bite, we do usually recommend a course of antibiotics as these lesions often become infected. Many cats also benefit from anti inflammatories and pain relief as there can be signicant discomfort involved. We should clean the area twice daily with cotton wool and salt water and prevent licking with a buster collar. I do hope this helps.
Dec. 8, 2020
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tabby
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Two Years
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6 found this helpful

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6 found this helpful

My pet has the following symptoms:
Bumps
Hi! My car has a white bump on his head that has not grown over the past month since I’ve noticed it. However he did scratch it and it has a small scratch on it. The bump is on his left side of his head by the base of his ear and is white. It is not large at all and is about the size of a large pimple on a human.
Aug. 2, 2020
Answered by Dr. Sara O. DVM
6 Recommendations
Hello, Some cats will get these types of masses as they get older. These are usually benign and nothing to worry about. If it ever starts to grow, then it should be seen by your vet and removed.
Aug. 2, 2020
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Domestic cat
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One Year
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3 found this helpful

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3 found this helpful

My pet has the following symptoms:
Lump On The Back Right Side
So my cats tail was amputated like a month ago and he had his check up last week to see how everything was going and the vet said he was doing great well I noticed yesterday morning he has this lump on his back side and today its warm and also much bigger then it was. What may it be I'm so concerned. I made him an appointment but they cant get him in until friday afternoon.
July 28, 2020
Answered by Dr. Michele K. DVM
3 Recommendations
Thank you for your question. If the lump is near where the surgery was, it could be a reaction to suture, or it could be an infection. If he is doing well otherwise, you are probably fine to wait until Friday to have him seen, But if it is growing quickly or he is lethargic or does not want to eat, then you may want to ask if they can see him sooner. I hope that all goes well for him.
July 28, 2020
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Egyptian Mau mix
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Peanut
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12 Years
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1 found this helpful

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1 found this helpful

My pet has the following symptoms:
Diarrhea
Pain
Abscess
I have a 12 year old cat who we recently rushed to a vet hospital because an abscess busted open next to her anus. I thought at first it was an anal sac problem but they informed me it was too high. When it bursted at home, a brownish, foul smelling liquid came out. They opened the abscess, drained and flushed, and gave her an antibiotic shot. She was sent home after 9 hours with pain meds and antibiotics. They didn't close it at all and left a very deep, gaping hole in her backside. It's been 5 days now but it's still seepy and hard to keep clean. They did not give us instructions on how to keep this huge hole cleaned as we can't keep her confined in a single room where we live. She's had diarrhea too, probably from the meds but eating, drinking, and generally happy... The giant wound just doesn't seem to be healing or hasn't yet.
Sept. 20, 2018
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Cat
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Kitty
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7 Years
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4 found this helpful

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4 found this helpful

My pet has the following symptoms:
Swollen By Drainage Site
My cat was in an altercation with a feral cat and developed an abscess 5 days later. I took him to the vet and the abscess was lanced and he was given a shot of antibiotics and was orally given zydaclin by the vet and I was told to give him 1 ml twice a day. It has been 36 hrs and the area that was lanced is still swollen and open, yet no pus comes out when gently squeezed. Should I be concerned? The vet did not take a culture and the abscess was lanced after local anesthesia. Thank you.
Sept. 10, 2018
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Maine Coon
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Sasa (pronounced SHA-sha)
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15 Years
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0 found this helpful

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0 found this helpful

My pet has the following symptoms:
Anxiety
My domestic partner, Sasa (pronounced SHA-sha) [friend her on facebook] has been diagnosed as having a low red blood cell count and she has an abscess on her intestine. Her vet says that she is too old, at 15.5 years, to risk having deep anesthetic surgery. He says not to bother her with any special diet and give her anything she wants while she lives out her days. After three nights in hospital with fluids and antibiotics she has been home now three weeks and is showing no pain or discomfort except for apprehension going into her room and her litter. Afterwards, and now, everything seems normal and even better. She is an extremely resilient Maine Coon. Are there symptoms of something I should be aware of for her future? Thanks to all and Merry Holiday to you and fur companions.
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stray
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Bonnie
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5 Years
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0 found this helpful

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0 found this helpful

My pet has the following symptoms:
Slaving And Bleeding Out Mouth. Badsmeel
I have a cat i feed everyday just one afternoon came to me bloody. I thought someone had kicked her.when i finally cought her i called a vet friend that told my it was infection in the mouth. Giving kitty clavamox. Hope to help.
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Scottish short hair
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Mischa
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6 Years
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0 found this helpful

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0 found this helpful

My pet has the following symptoms:
Scratching And Shaking Head
My cat had an abscess and it was treated by a Vet. He got a small cut and antibiotics for 8 days. He had to wear a caller for 10 days. 6 days ago we took off the caller and the small cut seamed to heal also the abscess is gone. But he still shakes his head and scratches where the cut was against th door. Is it normal? Also he is a home home not sure where the abscess came from. He has recovered and it does look healed. But I'm just worried why 6 days later he still scratching it and the other part of the face against every door. Plus he shakes his head after we took off the caller.
Abscess Average Cost
From 232 quotes ranging from $200 - $3,000
Average Cost
$700
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