Contact Dermatitis in Cats
Your cat rubs against things every day. This is normal behavior and seldom causes any problems. If he should rub against something that leaves a residue on the fur, however, it could become a serious issue. Topical poisons, or toxins, cause skin irritation, which is often referred to as contact dermatitis. If the damage is severe enough, it is considered a chemical burn.
If your cat licks or swallows these toxins, his mouth and digestive tract can also be affected, and possibly other organ systems as well.
What to Watch For
Household chemicals, insecticides, and petroleum products are the most common topical poisons encountered.
A thorough physical exam of your cat and identification of the poison will be the first things your veterinarian does. Your vet will also decide if the skin damage is due to a chemical burn, an allergic reaction, or contact dermatitis from exposure to a topical poison or irritant. Additional tests may be requested based on the initial evaluation of your cat, especially if the toxin was swallowed.
The foreign material will be completely removed from your cat’s skin. This may require sedation, as well as shaving and multiple baths. If the skin has been damaged to the point that your cat actually has a chemical burn, it will be treated as a burn. For less serious irritation, various healing ointments and anti-inflammatory medication will be used as needed.
If there is damage to the mouth, it will be flushed with water to remove as much of the toxin as possible. Swallowed poisons, meanwhile, are treated differently. If there is concern for infections, antibiotics may be prescribed.
Severe damage to the skin, mouth, or digestive tract will require hospitalization and supportive care such as intravenous fluids and injectable medications.
Cats can be exposed to these poisons not only by brushing against them, but also by walking on them, or having these substances spilled or sprayed on them.
Living and Management
Removal of the toxin from your cat’s skin is the most important part of the healing process. Additional treatment is aimed at protecting the skin until it heals, which is usually just a few days.
Damage to the mouth and digestive tract from licking and swallowing the poison is more of a challenge. The sores in the mouth may make it painful to take medication or eat. Liquid medications, including those that coat and protect the esophagus and stomach, and soft, canned food will help.
If your cat refuses to eat for more than 1 to 2 days, he needs to be re-evaluated by your veterinarian. It puts your cat at risk for developing a condition called hepatic lipidosis, which can be fatal if not treated aggressively.
Most exposure to topical poisons is accidental. Be sure containers of poisonous material are properly sealed and stored. Wipe up any spills immediately and prohibit your cat from entering areas where hazardous materials are stored.
Referring to the liver
The tube that extends from the mouth to the stomach
The whole system involved in digestion from mouth to anus
A condition in which the skin becomes inflamed
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