Abscesses in cats can be treated at home, especially if you catch them early, but you should still take your cat to your veterinarian for further investigation.
In the meantime you will need, Betadine, warm water, a washcloth, clippers, antibiotics, antibiotic ointment, antibacterial soap, a towel, gauze pads and an Elizabethan collar.
It’s a good idea to already have a cat first aid kit in your home.
Start off by carefully clipping the fur around the abscess. The fur should be removed to generate a furless 2-inch circle around the opening of the abscess. This will make an allowance for improved air flow to the wound, better visibility of the wound site and much easier cleaning.
Clean the abscess location using antibacterial soap. Rinse meticulously with warm water, permitting the water to flow into and around the wound site for a full two minutes. This mission will in all probability take two people; one person to wash the wound location and a second person to hold the cat feline, who will try to get away since cats detest water.
Gently dry the fur-free area around the abscess with a sterile gauze pad. Use a soft, clean towel to absorb moisture on other sections of the cat's coat.
Tip Betadine---or another quality antiseptic straight onto and into the abscess. This will kill bacteria but not cause damage to the tender skin, as happens with hydrogen peroxide. Allow the antiseptic time to air dry. Use sterile gauze pads to soak up any drips.
Administer a generous layer of antibiotic ointment onto the location of the abscess. The ointment should also be applied to the entire furless area. The ointment will be absorbed by way of the skin to battle the infection.
Put an Elizabethan collar or "e-collar"---onto the cat's neck to stop the cat from licking the location of the abscess.
Take the feline to the veterinarian right away to obtain a prescription of antibiotics. This is the only effectual way to treat an abscess, since the infection is located underneath the skin and external cleaning methods are not enough. Depending on the size and severity of the abscess, the veterinarian may make a decision to perform a surgical operation to clean and drain the abscess.
Before going to the veterinarian, replicate Steps 2 through 5 three times per day. Once the feline is treated by the veterinarian and started on oral antibiotics, Step 5---the application of antibiotic ointment---will no longer be necessary, but carry on Steps 2 through 4 three times per day.
Do not let kitty outside while he/she is being treated for the abscess. The e-collar will have to stay in place until the abscess has completely healed, and letting a cat go outside with an e-collar can be tremendously dangerous.
Test your cat's temperature. Normal temperature is between 100.5 to 102.5 degrees F. If the cat has a fever, this point towards a serious infection that is more than likely spreading. This calls for a veterinary emergency. Treatment should not and cannot wait; go to a 24-hour veterinary clinic if an immediate appointment is not available at the cat's regular veterinarian.