Skin Rash in Cats
Written By hannah hollinger
Published: 10/28/2016Updated: 10/28/2021
Veterinary reviewed by Dr. Linda Simon, MVB MRCVS
Skin Rash in Cats - Symptoms, Causes, Diagnosis, Treatment, Recovery, Management, Cost
What is Skin Rash?
The skin is the body’s first line of defense against the hazards of the outside world. When a potential invader comes in contact with the skin, such as a bacteria or fungus, the immune system fights back, sending specialized cells to the point of impact. However, when the body reacts to a substance, the body has an inflammatory response which can potential lead to an allergic reaction. Skin rash in cats is a highly pruritic condition that commonly affects the underbelly, feet, nose, ears and mouth of a cat. The underlying cause of skin rash in cats can be caused by a variety of factors, making the inciting cause difficult to pinpoint.
Skin rash in cats is an overreaction of the immune system to an otherwise harmless substance. Skin rash in cats, also known as feline contact dermatitis, is caused by direct or indirect contact with an irritant, or allergenic substance.
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Skin Rash Average Cost
From 226 quotes ranging from $200 - $500
Average Cost
$250
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Symptoms of Skin Rash in Cats
Skin rash in cats will cause a notable reddening of the skin. The area affected will be irritated, pruritic (itchy), and inflamed. Common areas affected by skin rash include the cat’s anus, abdomen, toes, ears, and chin, as there is not much fur to protect the skin from the irritating substance. Additional symptoms linked to skin rash in cats includes: 
  • Papules 
  • Blisters
  • Vesicles
  • Thickening of the skin
  • Dandruff
  • Scratching
  • Biting of the skin
  • Greasy fur
  • Secondary bacterial infections
Causes of Skin Rash in Cats
Skin rash in cats is a result of a feline coming into direct or indirect contact with a substance. The immune system mistakenly takes one of these harmless substances as an intruder and releases a chemical response to the skin, resulting in an allergic reaction. Skin rash in cats can be caused by either an irritant or allergenic substance. 
Irritant Skin Rash Causes
  • Chemicals
  • Solvents
  • Topical medications
  • Detergents
  • Soaps
  • Perfumes
  • Plastic
  • Fibers 
Allergenic Skin Rash Causes 
  • Insect bites
  • Parasites (especially fleas)
  • Foods
  • Mites
  • Fleas
  • Medications
  • Plants
  • Bacterial or fungal infection 
Diagnosis of Skin Rash in Cats
Diagnosis of a skin rash in cats will require a review of the cat’s medical history, plus a great deal of communication between the pet owner and the veterinarian. Pet owners will be required to tell the veterinarian when the symptoms were first noted, where the cat spends most of her time, and what the pet owner suspects could be the cause of the skin rash. Any new additions to the home such as furniture, deodorizers, or carpeting should be noted as textile materials could be the root of the problem. Changes the pet owner has made to the cat’s food, medications, preventative flea/tick treatments, and even a new collar or food dish should be taken into consideration. 
Tests can include skin combings for fleas or flea dirt, skin scrapes for mites and cultures.
In order to make an accurate diagnosis, the veterinarian may choose to perform a patch test. A patch test is a simple test in which the veterinarian will take a sample of the suspected irritant and tape it directly on the cat’s skin. The substance will remain on the cat’s skin for a duration of time, then removed for assessment. If a rash appears underneath the taped substance, the skin rash substance has been pinpointed. If the tape test proves ineffective, the veterinarian may ask the client to remove the feline from the suspected irritant. He/she may also ask the owner to monitor the cat’s daily activities and daily diet to see if they can detect any possible causes at home. 
If the underlying cause of the skin rash remains undetected, the veterinarian may move on to perform an allergy test on the cat’s blood serum or perform a skin biopsy. 
Treatment of Skin Rash in Cats
Once the underlying cause of the skin rash has been pinpointed, the feline will need to be removed from that substance immediately. The doctor may bathe the feline with specialty shampoo to remove the particles of the substance from the skin and apply a topical corticosteroid to the cleansed skin to relieve symptoms. The best treatment option for skin rash in cats is to remove the irritating substance from the feline’s environment, but if the substance cannot be removed, therapeutic treatment will likely be prescribed.
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Recovery of Skin Rash in Cats
The prognosis for a cat with skin rash varies from feline to feline. Some felines’ immune response balances out over time and the substance no longer causes the feline to develop contact dermatitis. However, other cats simply have an over-responsive immune system and pet owners may find more than one substance causes their pet’s skin to break out in a rash. The best way cat owners can keep their cat’s skin rash under control is by following the management and preventative program established by their veterinarian.
Skin rash in cats can be expensive to treat. If you suspect your cat has skin rash or is at risk, start searching for pet insurance today. Brought to you by Pet Insurer, Wag! Wellness lets pet parents compare insurance plans from leading companies like PetPlan and Trupanion. Find the “pawfect” plan for your pet in just a few clicks!
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Skin Rash Average Cost
From 226 quotes ranging from $200 - $500
Average Cost
$250
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Skin Rash Questions and Advice from Veterinary Professionals
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domestic medium hair
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Ginny
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4 Months
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My pet has the following symptoms:
Hair Loss
Biting
Scratching
Bumps
Lower Back
My cat has had a lower back rash for a little over 3 weeks. At the beginning, it looked like it was bug bites but then it just got worse. Soon her hair began falling out. She has no fleas on her. My mom suggested thinking about what we've changed and food popped in my mind. We got her a different kind of food about a month before this got bad. I immediately switched her back to her older food. It seems to have helped but she is still biting and licking profusely and hair keeps falling out. Is there any Benedryl or something of that sorts I can give her to calm the irritation?
Aug. 30, 2018
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Orange and White Tabby
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Ginger
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5 Years
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0 found this helpful

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My pet has the following symptoms:
Redness
Papules
Scabs
Rash
I believe that my cat has a rash. I first noticed a small scab just below his right ear with some redness around it. After 3 days there are now 2 big scabs and redness around them. As well, I have just found a papule infront of one of the scabs. He is an indoor cat so there is no chance of bug bites being the irritant. The scabs seem to be healing but are still quite large. Do you think this is a rash? Should I take him to the vet?
Aug. 19, 2018
0 Recommendations
You should take Ginger to a Veterinarian for an examination to be on the safe side; whether a cat is indoor or outdoor just limits the risk of bites/infection but doesn’t eliminate the risk and it is possible for bites, infections and other issues to affect indoor cats. Without examining Ginger I cannot confirm what the cause is or offer treatment. Regards Dr Callum Turner DVM
Aug. 19, 2018
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DOMESTIC
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Shiba
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4 Months
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0 found this helpful

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My pet has the following symptoms:
Ear Lesion
Ear Crust
Rash
Spots
Black Spots
Ear
My cat is currently being treated for ringworm, oral medication, antifungal topical, and shampoo. We have been also using a UV light to follow progress. However, he recently developed a weird black spotted rash like problem in his inner ear towards the tip of the ear. I can’t find anything like it online. We have a vet appointment in a few weeks for follow up and second round of shots but are unsure about how to treat this, should we continue with the antifungal in that area? Could it be a reaction?
Aug. 16, 2018
0 Recommendations
Continue with the treatment as prescribed by your Veterinarian and follow up with them in a few weeks, if the spots get larger or you notice any other symptoms visit your Veterinarian earlier. Without examining Shiba myself I cannot determine what the spots are. Regards Dr Callum Turner DVM
Aug. 16, 2018
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Domestic long hair
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Trixie
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9 Months
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My pet has the following symptoms:
Redness
My cat has red dots on her face above her left eye and some inside the the ear. She does not scratch the site or show signs of pain when it is touched. What is the cause of This? What should I do?
Aug. 15, 2018
0 Recommendations
There are various causes for red dots to form which may include infections, parasites, allergies, irritation among other causes; without examining Trixie I cannot say what the specific cause is; however you should keep a close eye on the dots and visit your Veterinarian for an examination especially if they get worse. Regards Dr Callum Turner DVM
Aug. 16, 2018
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Calico
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Tinkerbell
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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:
Chewing Fur
My cat is chewing her legs and nipples and feet pads and is causing redness swelling and bleeding there is a noticeable rash little reds dots on her stomach what do i treat her with?
Aug. 7, 2018
Answered by Dr. Michele K. DVM
1 Recommendations
There are many reasons that Tinkerbell might be having this problem, including parasites, bacterial or fungal infections, or allergies. Since I can't see her, I don't know what the cause of the problem is, and those things are all treated quite differently. Since she seems to be affected quite severely, it would be best to have her seen by a veterinarian, as they can look at her and determine what might be going on, and get any treatment that she might need.
Aug. 7, 2018
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Egyptian Mau
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Claire
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5 Years
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0 found this helpful

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My pet has the following symptoms:
Itchiness
Claire started coming to our yard about 3 months ago for us to feed her. She was a stray cat. During the summer we went away and when we came back we were saddened to find that a car had injured her and she was limping with a twisted paw. We grabbed her, took her to the Vet and adopted her. She has been recuperating amazingly. However, she is now developing 2 red rashes on her back leg. Any idea how to cure it? She was injected with antibiotic but it didn't help and she keeps liking the rashes. Has me concerned.
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Siamese
dog-name-icon
pretty
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2 Weeks
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my kitten has a rash in her abdomen and her private part is bloated what does it mean pls help me i dont know what to do ive been trying to help her pee but no pee is coming out she's only 2weeks old the mother cat cant help her pee
Skin Rash Average Cost
From 226 quotes ranging from $200 - $500
Average Cost
$250
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