Get

In Your Inbox

Dogster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Does My Dog Itch So Much But Has No Fleas? Vet-Reviewed Possible Reasons & What to Do

adorable beagle dog scratching body outdoor on the grass field in the evening

A lot of the time, when a dog starts scratching away, it’s because they’ve gotten fleas. As horrible as that is, it’s fairly easily resolved with flea medication and lots of vacuuming and cleaning. But what if your dog is constantly scratching and biting himself but there are no fleas to be found? What does that mean?

If your dog is constantly scratching but there isn’t a flea in sight, there are four possible other reasons for the itchiness. We’ll look at these reasons below, as well as what you should do to remedy the issue. We’ll also tell you what sorts of treatment your vet might use for these and a few ways you can help your dog’s itchiness at home.

The 4 Reasons Your Dog is Scratching When They Don’t Have Fleas

1. Parasites

It’s important to note that just because you don’t physically see fleas or flea dirts on your pet, it doesn’t necessarily mean their itching isn’t caused by fleas. For some dogs with flea allergy dermatitis (FAD) just one or two flea bites can make your pup very itchy.

However, if fleas have been ruled out and your dog is on regular prescription flea preventatives then there are other parasites that might be causing the itching, such as ticks and mites. Ticks burrow their mouthparts into the skin and can cause irritation. This parasite can also transmit diseases, like Lyme, which could cause serious health problems for your pup. If you and your pet enjoy the great outdoors during tick season, always check them carefully for ticks when you bring them back inside! Also, be sure to give your pet a tick preventative to help reduce the risk of acquiring ticks.

Dogs can also get mange caused by microscopic mites that burrow into the skin to feed and live. There are two types of mange that can affect dogs, sarcoptic and demodectic and both can cause itching and secondary skin infections.

Closeup of infected mites and fleas on a dog's fur sucking blood
Image Credit: ThamKC, Shutterstock

2. Food Allergies

Canines can develop food allergies, most often to animal proteins like beef or chicken. Food allergies don’t occur that often in dogs (environmental allergies are more common), but they can happen and cause itchiness when they do. As well as itchy skin and ears they can also cause gastrointestinal problems like vomiting and diarrhea.

The only way to accurately diagnose food allergies in dogs is to remove all the currently fed foods and start a strict elimination diet trial under your vet’s direction. Unfortunately currently available blood and saliva tests are not reliable.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the personalized advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content Savings V1


3. Environmental Allergies

Environmental allergies could also be the culprit. Environmental allergies are precisely what they sound like—allergies related to things in the environment. Many things, including pollen, dust mites, and mold, could cause these allergies. Environmental allergies typically cause skin itchiness, particularly on the paws, face, and belly. This is another instance where consulting a vet is best.

Golden Retriever scratching itself on the grass
Image Credit: Ingrid Prats, Shutterstock

4.  Skin Infections

Finally, if it isn’t fleas, it could very well be a skin infection. Certain bacteria and yeasts live on dog skin without causing issues, however if the skin is damaged or they are suffering from other health conditions like hormonal conditions and allergies, they can overgrow and lead to an infection. The two most common types of skin infections in dogs are staphylococcal bacterial infection and yeast dermatitis caused by Malassezia.

Along with itching, your dog may have red inflamed areas of skin, and hair loss. If you see these signs, bring your pet to the vet as soon as possible. Once your vet has diagnosed the cause, infections can be treated with antibacterial or antifungal topical washes or oral medications. Any underlying causes will also need to be identified and addressed by your vet.

Dogster divider_v3_NEW_MAY_24_

What Should I Do for My Dog’s Itchy Skin?

Your best bet is to take your dog to the vet so they can receive a diagnosis about what is causing their itchiness (this is especially true if your dog is scratching, licking, or biting at themselves excessively). Your vet will run tests to figure out the issue’s root cause. Once that is discovered, treatment can begin.

Treatment depends on what exactly your canine companion is dealing with but could include:
  • Topical or oral medication
  • Steroids
  • Eliminating any allergens in the home or diet (when possible)
  • Antibiotics
  • Antifungals

There are also ways to help your pup at home if you know what is causing their itchiness. For canines with environmental allergies and sensitive skin, use a hypoallergenic shampoo designed to soothe itchiness when you give them a bath. Consider bathing your pup more frequently to wash allergens out of their coat, too.

A prescription diet may be helpful for a dog dealing with constant itchiness. This will, of course, require a prescription from your dog’s vet, but these sorts of food typically contain ingredients meant to reduce inflammation and boost skin health.

Talk with your vet about whether an essential fatty acid supplement, containing the right balance of omegas 3 and 6, would be beneficial for your dog. Essential fatty acids help keep the skin in good condition, can ease inflammation and may make a dog’s skin less reactive to the allergens around them.

small dog at vet clinic with owner and vet
Image Credit: Prostock-studio, Shutterstock

Dogster divider_v2_NEW_MAY_24_

Conclusion

If you have an overly itchy dog that doesn’t have fleas, then one of the causes above is likely why they’re so itchy. If your pup is suffering from extremely itchy skin, it’s best to take them to the vet to determine what is causing the issue. This way, your pet can begin proper treatment and get rid of itchiness sooner rather than later. You can also help by using itch-soothing shampoo and talking with your vet about a prescription diet or an essential fatty acid supplement!

Sources

Featured Image Credit: ElenaYakimova, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything dog

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.

How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Dogster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Border Point Dog: Info, Pictures, Care Guide & More

Are you looking to adopt a canine companion? Have you been searching for the perfect breed to play the role of both pet...

Labrador Retriever Puppies for Sale in Mississippi: Breeders List 2025

Potential pet parents look for several appealing traits when searching for a canine companion. While some might prioritize a dog’s looks over performance,...

How Much Exercise Does a Boston Terrier Need? Vet-Reviewed Facts

Playful and ready to rumble, the Boston Terrier is a lively pup with an upbeat personality. They’re quick to adapt to new environments...

German Shepherd Great Dane Mix: Info, Pictures, Care & More

As the name suggests, this breed is a hybrid of a German Shepherd and Great Dane. Because this is a mixed breed, you...

More related

Can a Labradoodle Be a Service Dog? Breed Qualities & Facts

When people think of service dogs, they often conjure up images of Saint Bernards in the Alps with barrels around their necks or...

12 Surprising Australia Pet Insurance Statistics to Know in 2025

Note: This article’s statistics come from third-party sources and do not represent the opinions of this website. The number of pets in Australia...

What Can Trigger a Seizure in a Dog? Our Vet Explains Signs, Causes & Treatment

Seizures can be scary to witness in people and pets alike. Changes in brain activity can trigger a seizure in a dog, though...

Are Australian Shepherds Smart? Dog Breed Intelligence Comparison

Australian Shepherds have got it all—beauty, personality, and brains. According to the American Kennel Club, the Australian Shepherd is a highly intelligent breed.1...

Keep reading

7 Best Dog Foods for Pitbulls to Gain Muscle in 2025 – Reviews & Top Picks

As pet owners, we all want our companions to thrive and give them the best we can give them when it comes to their nutrition. If you own a Pitbull, you understand that public perception has missed the mark, and...

pitbull eating

Is Blue Buffalo Made in the USA? What You Need to Know

Blue Buffalo is a famous dog food brand with many recipes for optimal canine health. There are tons of options in recipes, treats, and other supplements. If you have any kitties—they even have quite a comprehensive cat food line. But...

Is blue buffalo made in the USA?

Halo Dog Food Review 2025: Recalls, Pros & Cons

Review Summary Halo is a health-conscious dog food brand marketed toward those who love their pets and the planet. All of the recipes we reviewed feature a well-balanced blend of vitamins, minerals, and probiotics to fortify your dog’s gut. The...

Dogster_Halo Dog Food Review

The Honest Kitchen Essential Clusters – Don’t Call It Kibble!

As a veterinarian and owner of five (yes, five) dogs, finding a pet food that delivers outstanding nutrition and high-quality ingredients has always been important, but finding one that doesn’t cost the earth, require me to commit to a subscription,...

The Honest Kitchen_EssentialClusters_4

My Dog Ate Moldy Food: What Should I Do? Vet-Approved Facts & Signs Toxicity

If your dog has eaten moldy food—perhaps you didn’t store the food properly, or your dog ate the moldy food from the garbage—it is a cause for concern. Mold can make your dog sick, which is why you should take...

Can Dogs Eat Bok Choy? Vet-Verified Health Facts & FAQ

Most dogs love it when you offer them something different from their usual diet, and what could be better than healthy treats like veggies? But certain seemingly harmless vegetables can pose health risks to your beloved dog. For example, dogs...

Can Dogs Eat_bok choy

10 Best Puppy Foods in Canada in 2025 – Reviews & Top Picks

Congratulations on welcoming home a new puppy. This exciting and fun time in both of your lives may come with a lot of questions, especially if you’re a first-time dog owner. “What should my puppy be eating” needs to be...

labrador retriever puppy eating food from bowl outdoors

9 Best Hypoallergenic Dog Foods in 2025 – Reviews & Top Picks

If your dog has a sensitive tummy or you think they could be suffering from food allergies, you may be searching for a hypoallergenic recipe that can help them. The term “hypoallergenic” literally means “less likely to cause an allergic...

yorkshire terrier eating dog food from metal bowl