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Mold Allergies in Dogs
What are Mold Allergies?
Mold forms spores which then become airborne, causing an allergic reaction in both humans and animals who are sensitive to it. Mold is present everywhere, both indoors and out, and easily multiples in damp humid areas like basements. Mold is prevalent seasonally outdoors in piles of wet leaves and in decaying plant material. Mold does grow outside all year round but dampness and humidity allow for more rapid growth. Inside, homeowners often work constantly to deter mold from spreading in areas such as the shower and window ledges.
Canines who inhale mold spores typically suffer from very itchy skin as the first sign of irritation. Sufferers of an inhalant type of allergy will usually show signs of the sensitivity under the age of three, though dogs of any age can develop an allergy. Breeds that are thought to be sensitive to non-food allergens like pollen and grasses are many; the sex of the dog has no bearing. If your pet is showing symptoms of an allergy, schedule a veterinary visit in order to find the cause and provide relief from the signs.
One of the most common inhalant allergens for canines is mold. Pets who suffer from this type of condition often will have more than one inhalant allergy, meaning they are susceptible to the effects of other airborne allergens such as pollen and dust mites.
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Symptoms of Mold Allergies in Dogs
Humans who have an allergy to mold will often have respiratory symptoms. In dogs, signs manifest in the skin.
  • Pruritus (excessive itching and scratching)
  • Hair loss
  • Shaking of the head and ears
  • Chronic ear infections
  • Chewing of the paws
  • Redness and scaliness of the skin
  • Thickened and odorous skin
  • Hot spots
  • Secondary skin infection
Types
Some of the types of dogs that are thought to be predisposed to allergies are:
  • Golden Retrievers
  • Poodles
  • Pugs
  • Miniature Schnauzers
  • Lhasa Apsos
  • Shih Tzus
  • Irish Setters
  • German Shepherds
  • Terriers (West Highland, Boston, Skye, and Scottish)
Causes of Mold Allergies in Dogs
There are several different types of airborne mold which can be found on plants, decaying vegetation, grasses, leaves, trees, and in soil.
  • Alternaria - common in spring and fall
  • Phoma - after autumn rains
  • Spondylocladium - plants, air ducts
  • Helminthosporium - soil in summer
  • Hormodendrum - leaves
  • Penicillium - vegetation, stored objects
  • Aspergillus - vegetation, basements
  • Fusarium - cereal crops, plants
Diagnosis of Mold Allergies in Dogs
Pets who have an inhalant allergy often have sensitivities to multiple particles such as dust, mites, and pollen. Cases where a dog has a severe skin problem that is difficult to diagnose, a referral to a veterinary dermatologist may be necessary.
To start, the veterinarian will discuss your dog’s medical history. Important information for her to know will be recent illnesses, prior incidences of skin irritation, recent travel history, present diet, and whether there has been a need for medication of late. The veterinarian will also do a physical examination which will include a close look at the ears and the skin over the body. Some pets will need to be sedated for this exam if their ears or skin are tender, sore, or infected. Tests that can be done in the veterinary clinic will be blood tests, urinalysis, and skin scrapings, all with the goal of verifying other possible reasons for a skin problem such as mites or mange.
A veterinary dermatologist will order further testing which may include skin biopsy, skin cytology, ear and skin cultures, and additional skin scraping if necessary. Intradermal skin testing, where responses to allergens are measured and additional blood tests to check for antibodies to specific allergens may be recommended also.
Treatment of Mold Allergies in Dogs
The treatment for the mold allergy may involve many elements including:
Frequent Bathing
Shampooing your pet often with a hypoallergenic product in cool to warm water (never hot as it may irritate the skin) could be required to soothe the itching.
Inflammation Therapy
Medications such as corticosteroids and antihistamines can help with the inflammation. Topical creams to relieve redness, and Omega 3 supplements to boost the response of the body to the medication may be prescribed.
Hyposensitization
Allergen injections of a gradually increasing dosage are given as treatment, with the goal of desensitizing your dog to the mold.

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Recovery of Mold Allergies in Dogs
The treatment and the recovery of a mold allergy go hand in hand. Consistent adherence to the therapies prescribed by the veterinarian, as well as work on your behalf will help a pet living with allergies. Avoid allowing your pet to go in areas that have a potential for mold, like basements and under the deck. Use a dehumidifier in your home and clean rooms that typically produce mold (like bathrooms and humid laundry rooms) often. Use cleaning products that remove mold and spores, and have air conditioning ducts checked regularly. Pets can wear washable booties and a sweater when heading outside. Wiping the fur and feet upon entry into the home may help as well. The veterinarian can guide you further if you have questions, and will want to re-check your pet’s skin as needed to ensure that the measures that are being taken to combat the allergy are sufficient.
Mold Allergies Average Cost
From 579 quotes ranging from $500 - $2,000
Average Cost
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Top
Mold Allergies Questions and Advice from Veterinary Professionals
Labrador Retriever
Four Years

4 found this helpful

4 found this helpful

My pet has the following symptoms:
Itching
Itchy skin hair loss
July 18, 2020
Answered by Dr. Michele K. DVM
4 Recommendations
Thank you for your question. There are many reasons for hair loss and itching in a dog, including parasites, Mites, allergies, or bacterial or fungal infections. If this is something that has been going on for a while and it is not getting better, it would be best to have her seen by a veterinarian. They will be able to examine her, look at her skin, see what might be going on, and get her the right treatment. I hope that all goes well for her.
July 18, 2020
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Golden Retriever
Chloe
11 Years

8 found this helpful

8 found this helpful

My pet has the following symptoms:
Not Eating. Urinary Track Infection
I just moved into a house and the basement had some water damage for this past winter storms. There was/is black mold spores on the sheetrock near the floor. The removed to carpet and letting the concrete block wall dry up. My dog has been laying down in the room because its cool. I didn't realize what was going on until my Mom said something about the mold. My Golden Retrievers appetite is way off which is very very unusual. I have to force her to eat by putting the food in my hand. The Vet is having a hard time figuring out what's going on and said her liver was rather high. I did not tell him about the mold yet. She is not itching or any skin problems. Just not eating. I'm going back to the vet and tell him. What do you think?
July 20, 2018
8 Recommendations
Black mold may be associated with liver damage in dogs when entered into the bloodstream, you should bring this up with your Veterinarian to determine whether this is the cause or not. Regards Dr Callum Turner DVM
July 20, 2018
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Pit bull
Pharaoh
2 Years

1 found this helpful

1 found this helpful

My pet has the following symptoms:
Ear Itching
Chewing Of His Paws
Paws Sensitive To Touch
Odor Like Fritos From Paws And Ear
I have a 2 year old pit bull and we moved to Oregon almost two years ago. Until that he has never had any skin issues. Now is is always chewing at his paws and they are red and sensitive to touch. He also has something going on in his left ear, but the vet said it wasn't in an infection, he thought he had gotten something in it, but it has been over a year and the problems persists. If it is allergies, what type of topical treatment helps to reduce the itching and what can be used to relieve the itching from his ear.
Jan. 10, 2018

Answered by Dr. Michele K. DVM
1 Recommendations
Thank you for your email. There are many good oral allergy medications, if that is what is going on with Pharoah. If it has been over a year, he needs to have a follow up to find out what is going on. It is almost impossible to treat systemic allergies topically, and you should have an exam with your veterinarian to get to the bottom of this and get him some treatment. He may not have had an infection a year ago, but he easily may have one now. I hope that he is okay.
Jan. 10, 2018
I have a shitz zu, she is three months old. I recentlg found mold in my Kitchen under sink....I think it may have affected my dog. She has excessive hair loss, sneezing and some spots under her belly.
March 24, 2018
Sherene F.
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Pug
Suri
3 Years

12 found this helpful

12 found this helpful

My pet has the following symptoms:
Hot Spots, Itching, Sneezing
We have been living in an apartment with our 3 pugs where we found aspegillus/penicillium mold spores in the air and want to know what shampoo we can use to kill mold spores/mycotoxins from the mold before moving into our new home. Also, both my girlfriend and I have been diagnosed with mold disease, how can we test for this in our dogs as well?
Dec. 18, 2017
Answered by Dr. Michele K. DVM
12 Recommendations
Thank you for your question today. I'm sorry that is happening to all of you! Mold spores in the environment are primarily a problem for dogs as far as inhaled allergic disease. Any shampoo that you use will be fine to remove the spores from your dogs, as it is the act of physicaly removing the spores that is important. To test for fungal respiratory disease, you could have them all anesthetized and have tracheal wash samples sent out for fungal culture, but more conservatively, they would be assessed by your veterinarian for signs of respiratory inflammation or irritation. X-rays would show signs of fungal inflammation, as would signs of coughing, difficulty breathing, fevers, and other signs that can be assessed by your veterinarian. I hope that everything works out for all of you!
Dec. 18, 2017
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Jack Russell
Snoopy
4 Years

13 found this helpful

13 found this helpful

My pet has the following symptoms:
Redness
Hairloss
Sneezing
Hot Spots
Chewing On Paws
Hi! So my dog has allergies to seasons but few weeks ago our room was filled with mold. Now his hands and legs are all red. Around his lips are also red. He is always chewing his paws and they are really bad. It's been few days but he is not doing any better. He is now so sensitive, if I touch his legs or paws he will take them under his buddy. It's like he is in pain. He is a mix of Jack Russell with Miniature Bull Terrier.
Aug. 30, 2017
13 Recommendations
It is important to remove Snoopy from the moldy environment and to bathe him with a sensitive shampoo; it would be best to visit your Veterinarian to assess the extent of the reaction so that systemic medication and topical ointments may be prescribed, it would also be valuable to put a cone on him to prevent further licking. There is also a risk of secondary skin infections if Snoopy continues to bite himself and damage his skin. Regards Dr Callum Turner DVM
Aug. 30, 2017
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Maltese
Augie
9 Years

0 found this helpful

0 found this helpful

My pet has the following symptoms:
Sneezing
I have a 9 year old Maltese. We winter in Florida where I believe it all started. He sneezes violently, actually knocked out a tooth. Also reverse sneezing and he also sounds congested sometimes when he breathes. Has a runny nose. I asked my Vet what I should do to cure this. What should I do when he sneezes. She said, say God Bless you. Please, I need to help my dog. Anyone know a good homeopathic allergist for dogs. No luck finding someone who can help. Thank you. Augie and his Mom
Shih Tzu
Ziggy
12 Years

1 found this helpful

1 found this helpful

My pet has the following symptoms:
Seizures
I moved from North Dakota to Texas in 2014 and in June 2017 my Shih Tzu starting having seizures. I have done all the vet tests (except MRI) and everything checks out fine. I have been recording the dates of his seizures and for the last two years he always has one in April/May and November. Since the seizures started in Texas and there was never an issue in ND, I am now thinking that he is having seasonal seizures that may be due to high mold count during the spring and fall here in Austin. He is not on any vet prescribed medication for his seizures and have been trying other holistic approaches for the seizures. Has anyone else experienced seasonal seizures with their dog? I can find some information on this for humans but nothing online about animals. Thanks
Black lab/german shepard
Jazz
4 Years

0 found this helpful

0 found this helpful

My pet has the following symptoms:
Weight Loss
Wound
Coughing
Labored Breathing
Fatigue
Wheezing
About 6 weeks ago I noticed my cat cough. At first I didn’t think much of it thinking it may have been a hairball. When the cough persisted, I took fez to my primary vet where he was diagnosed with asthma based on his symptoms. The doc started fez on prednisone 5mg daily for 5 days. After the 5 days, fez was still coughing so I took him in for an X-ray. The X-ray was alarming, showing large masses on fez’s lungs. I was referred to an internal specialist to determine if the masses were cancer. Fez had a fine needle aspiration under anesthesia. The masses were not cancer, but something called pyogranulamatous inflammation. Many tests have been run including crypotococcus, histoplasmosis, feline aids, feline leukemia, toxoplasmosis, and Mycobacterium. All were negative. A sample for Aspergillus was sent in just the other day. Fez was started on prednisolone and fluconazole for safe measure almost two weeks ago now. I decided it would be prudent to take my other cats and dog in for X-ray. One of the other cats has gone so far and masses were spotted in his X-ray as well. Jazz, our dog seems to be doing fine other than the occasional hack and licking quite a bit. We are desperate for an answer. I’m thinkig it’s mold. What other tests can be done? Have you ever seen this?
Shetland Sheepdog
Ginger
11 Years

0 found this helpful

0 found this helpful

My pet has the following symptoms:
A Random Gag, Nothing Coming Up
I have a 11yr old shelty. Around Christmas, she started a gag, nothing came up. It has continued daily. Her activity, skin, demeanor, energy, appetite,pads are all totally normal. The gag doesn't follow any pattern or doesnt occur after playing or eating. her fecal analysis shows no parasites. X-rays of her throat, chest and stomach are normal. I wondered if some house plants have a mold, which I treat or put the plants outside. Maybe some mold got on her ball and she got it in her mouth? What else to check? I will approve her to be mold meds if needed or helpful.
Labrador Retriever
Ginger
11 Years

1 found this helpful

1 found this helpful

My pet has the following symptoms:
Weight Loss
Loss Of Appetite
Cough
Goopy Eyes
Is it possible for exposure to mold to show up in the lungs to appear like cancer or a severe fungal infection? I just got home from the vet and they did an X-ray and showed full lungs and it developed very fast. Thought was cancer or a severe fungal infection. My dog has had a cough and a very heavy hack. Was treated with antibiotics which seemed to take away the cough but the hack remained when active. Different activities cause the hack to begin and her breathing is rapid. Symptoms developed like over night with goopy eyes and the cough. She has recently stopped eating.
Mold Allergies Average Cost
From 579 quotes ranging from $500 - $2,000
Average Cost
$1,200

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