Understanding Abscesses in Cats

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Last updated 8/2/2025

Cat health
Abscess
Cat care
Pet health
Cat wounds

What is an Abscess on a Cat?

Abscesses are pockets of pus that often form from puncture wounds during cat fights. They can also be caused by foreign objects like grass seeds or splinters. The cause may only become clear once the abscess drains and the tissue is examined.

How do Abscesses on Cats Occur?

A cat's skin heals quickly. When punctured by a tooth or claw, bacteria can enter the tissue. The small wound heals over, creating a perfect place for bacteria to grow. You'll notice a soft, painful swelling three to five days later. The likelihood of an abscess forming depends on:
  • The wound's depth and extent
  • The type and number of bacteria
  • The cat's immune system strength
Apart from local soreness, cats may not show symptoms right away. But, watch for fever, loss of appetite, or tiredness, which could mean the bacteria is spreading.

What are the Symptoms of Cat Abscesses?

Your cat will be in pain if it has an abscess. Signs to watch for include:
  • Sudden loss of appetite
  • Less activity, sitting 'hunched over'
  • Reluctance to move or play
  • Pain when touched
  • Fever (warm to the touch)
  • A noticeable lump or inflamed area
  • Possible limping
Keep in mind that fur can hide abscesses.

Treatment for Cat Abscesses

An abscess might burst on its own, releasing foul-smelling pus. At this point, your cat might feel better. If this happens:
  • Clip away fur around the wound
  • Bathe with warm salty water or diluted hydrogen peroxide (50/50)
If it doesn't rupture soon, visit a vet. They may drain and clean the abscess, helping it heal faster. A vet might insert a drain to allow the pus to escape over several days and prescribe antibiotics.

Preventing Abscesses

If you suspect a bite or puncture, see a vet to prevent abscesses. Early treatment can avoid complications. Check for wounds after a fight, especially around the head, neck, forelegs, and lower back. Look for matting, tufts of hair, or blood. Small holes should not be ignored. Press these areas gently to see if your cat feels pain. Neutering male cats and keeping them indoors at night can reduce fight injuries.

When to Visit the Vet

Take your cat to the vet if:
  • It was bitten or clawed
  • It refuses food or seems in pain
  • The abscess is large
  • It doesn’t heal within 48 hours