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What is Schnauzer Comedo Syndrome?

Schnauzer Comedo Syndrome, also known as Schnauzer Bumps, is a skin disorder which only affects Schnauzers. These bumps are wart-like in appearance or may look like pimples or blackheads. They typically flare up on the back of the dog, mainly down the spine. They are not contagious and are not harmful to the Schnauzer.

These bumps may vary in appearance from dog to dog; some may be pus-filled, some may have slight oozing fluid, and some may not have either.  Black-centered bumps may be apparent in certain cases, and in other cases they may crust over. The Schnauzer’s skin may also be scaly in addition to having the bumps.

The frequency and the severity of the bumps depend on each dog. For certain Schnauzers, the bumps may only appear sporadically or frequently and consistently. They do not harm the dog’s overall health, but can be slightly uncomfortable in some cases. Luckily, there are specific types of shampoos and topical solutions that can help minimize any discomfort. There is no cure for this condition, but it can be controlled with the help of a veterinarian.

Schnauzer Comedo Syndrome in dogs is a genetic condition in which miniature Schnauzers develop bumps on the skin, typically along the back. This condition is not a harmful condition and only affects the appearance of the skin.

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Symptoms of Schnauzer Comedo Syndrome in Dogs

Symptoms of Schnauzer Comedo Syndrome will vary from dog to dog, in both appearance and discomfort. Symptoms may include:

  • Black, crusty bumps on the back
  • Raised pimple-like or wart-like spots on the back
  • Hair loss
  • Skin thickening
  • Itchiness
  • Red and irritated patches of skin
  • Possible strong odor

Types

There are several different skin conditions which can occur that may be confused with Schnauzer Comedo Syndrome or have similar characteristics. Differential diagnoses include:

  • Skin allergies
  • Food reactions
  • Flea dermatitis
  • Bacterial infection
  • Fungal infection
  • Ectoparasites

Causes of Schnauzer Comedo Syndrome in Dogs

Causes of these bumps are breed-specific. Causes may include:

  • Predisposition
  • Genetics
  • Blocked sebaceous glands

Diagnosis of Schnauzer Comedo Syndrome in Dogs

If your Schnauzer is showing signs of bumps along his back, make an appointment with your veterinarian. Once you arrive, the veterinarian will take a close look at your dog’s skin. He may then perform preliminary testing, such as blood work, urinalysis and biochemistry profile to check your dog’s overall health. Before he moves on, he may want to rule out any other health conditions.

He will ask questions pertaining to when you first noticed the bumps and the frequency of the flare ups. He may also want to know information about your dog’s environment, sleeping conditions (such as bedding type), and diet. He will also want to be sure your dog gets plenty of water throughout the day due to proper electrolyte content within your dog’s system. Dogs who do not have plenty of water can become dehydrated and can be at risk for scaly skin.

Typically, your veterinarian will be able to come to a diagnosis by visual observation and the knowledge of this condition. The veterinarian may clip a small area of his hair so he can take a closer look at the papules on his back. He may also scrape the skin to retrieve a sample in order for it to be tested. The biopsy will confirm this diagnosis if there is a plug blocking the follicle of the hair and the sebaceous gland. This plug may be filled with sebum and keratin and have a secretion. It will look like a very small cyst.

Treatment of Schnauzer Comedo Syndrome in Dogs

Once your miniature schnauzer is diagnosed with this condition, your veterinarian will outline several treatment options for your companion. Treatment methods may include:

Antibiotics

If there is a secondary infection due to infected pustules on your dog’s skin, your veterinarian may prescribe an antibiotic for 2 to 3 weeks. Your veterinarian will recommend the appropriate antibiotic for your companion.

Topical Medications or Agents

Consistent cleaning using alcohol, antiseptic, or even cleaning pads for people can help dissolve and loosen the comedones. Other topical ointments such as benzoyl peroxide and anti-seborrheic shampoos may also be used. It is important to use only the mildest of shampoos or topical ointments due to the fact that the follicles which are plugged may become inflamed by harsher substances. Your veterinarian may also suggest that you combine several of these topical substances.

Consistent Monitoring

Since there is no cure for this condition, consistent upkeep can help keep the bumps to a minimum. Consistent care and monitoring of your dog’s affected areas may help keep any flare ups from occurring. Your veterinarian may suggest keeping the hair very short in the affected areas and bathing your dog frequently.

Vitamin Supplements

Vitamin A supplements may help control your Schnauzer’s condition. You may want to ask your veterinarian if supplements of 600-800 IU/kg once a day can help. You should not give your dog vitamin supplements without your veterinarian’s consent.

Recovery of Schnauzer Comedo Syndrome in Dogs

Fortunately, this condition is not harmful to your Schnauzer; it does cause his skin to lack a healthy appearance, but it can be controlled.

If your veterinarian has given you suggestions for maintaining the bumps and preventing flare ups, follow his advice. It is important to not give your dog any medications or holistic treatments without consulting with your veterinarian first. If you do choose to see if any holistic supplements will work for your dog, your veterinarian may be able to recommend some for you.

Your Schnauzer will live a long and happy life with this condition. If it is managed well by you, it will be devoid of any secondary infection or inflammation. It will be important to monitor the bumps and be sure they are cared for with the advice of your veterinarian.

Schnauzer Comedo Syndrome Questions and Advice from Veterinary Professionals

Boomer
Miniature Schnauzer
4 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

Solid mass changing shape

My Four year old miniature schnauzer has a solid mass about the size of a dime that is beginning to change shape slightly. The mass is thick in depth it feels like it only moves if I move his skin. What could this be. Do I need to have a biopsy.

Dr. Michele King, DVM
Dr. Michele King, DVM
1098 Recommendations
Many masses are benign, but some are not. The best way to find out what that mass is would be to either have it removed, or have a biopsy. Your veterinarian can look at the mass, determine what might be going on, and give you recommendations for treatment. I hope that all goes well for Boomer.

My 4 year old schnauzer had a small lump about the size of a dime on his back as well. The vet lanced it and stuff came out similar to a human pimple. We’ve had to squeeze the rest of it out over the course of a few days. It was a clogged hair follicle that turned into a boil just like humans can get. This is common for this breed.

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Charlie
minature schnauzer
3 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

Itchiness

Hi, my minature schaunzer has been treated twice with antobiotics for Comedo syndrome. After been clipped I have noticed that he is agitated by the lumps on his back & I was wondering if there is an ointment that I can apply to reduce the itchiness. Many thanks, Jane

Dr. Michele King, DVM
Dr. Michele King, DVM
1098 Recommendations
There are no ointments to help with Comedo syndrome, but there are some medicated shampoos that can help. Your veterinarian can advise you on any shampoos that may help, and sometimes, twice weekly shampooing can improve the situation.

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Max
Miniature Schnauzer
4 Years
Fair condition
0 found helpful
Fair condition

Has Symptoms

He’s acting Normal

A few weeks ago, after my dogs grooming, i noticed he was scratching/biting a certain area a lot. We trimmed his hair very short so i just thought i was because of his hair growth. he stopped biting the area about a week ago. no signs of hair loss but today i notice something on the side of his right back-leg thigh. it’s like small pimples, but with a black pigment in the skin, like if it is dirty. he is acting fine. there is also one little red pimple with a very small scab that he must’ve popped while scratching himself. do you know what could be the cause? please help.

Dr. Michele King, DVM
Dr. Michele King, DVM
1098 Recommendations
Thank you for your email. Max may have a bacterial infection, or a parasite, or impacted hair follicles - all of these things may or may not require treatment, depending on how severe the problem is. Since I cannot examine him or determine what is happening with him, it would be best to have him seen by your veterinarian, as they can examine him and prescribe any medications or prescription shampoos that may help him.

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Bella
Miniature Schnauzer
9 Years
Fair condition
-1 found helpful
Fair condition

Has Symptoms

scratching

My 9 year old mini schnauzer has a bump on her back that keeps bleeding.... I think she keeps scratching at it and breaking scab. I keep cleaning it and putting neosporin ointment. Should I be concerned or do anything else? It's perfectly round and my other dog has one similar and I think his bled for a while but not for long

Dr. Michele King, DVM
Dr. Michele King, DVM
1098 Recommendations
Thank you for your email. It is somewhat common for dogs to develop skin tumors as they age, and some are very benign, while others are not and should be removed. It would be a good idea to have an appointment with your veterinarian to look at the lump, see if it needs testing or removal, and try to find a treatment for it so that it stops being a problem. I hope that everything goes well for her.

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Matty
Trish
5.5
Mild condition
0 found helpful
Mild condition

My schnauzer has red and brownish spots on his abdomen and dry scabs on his back. The abdomenseem to be bothering him. What can I do to relieve him? Would something like Benadryl help?

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2513 Recommendations
First you should try bathing with a benzoyl peroxide shampoo, giving Benadryl at 1mg/lb (up to three times per day) won't do any harm but probably won't help. Keep bathing with the shampoo every two or three days, but if there is no improvement you should visit your Veterinarian for an examination. Regards Dr Callum Turner DVM

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