Dog Fleas, Mites, and Tick-Borne Disease FAQs
If your dog is scratching excessively, losing hair, or developing recurrent skin infections, parasites may be part of the problem. While many owners immediately think of fleas or ticks, mites are another important cause of skin disease that often go undiagnosed without veterinary testing.
At Dermatology Clinic for Animals, we specialize in diagnosing allergies and diseases of the skin and ears. Below are answers to some of the most common questions about fleas, mites, and tick-associated diseases in dogs.
If your dog needs specialized dermatology care in or near Lacey, WA, call us at (360) 350-4756 to schedule an appointment.
How does my dog get fleas or mites?
Fleas are commonly picked up from other animals or contaminated environments. Your dog can encounter fleas at dog parks, boarding facilities, groomers, veterinary clinics, on neighborhood walks, or even in your own backyard. Wildlife such as raccoons, opossums, and squirrels can also introduce fleas into the environment.
Mites can develop in different ways depending on the species. Some mites, such as Demodex mites, normally live on the skin in small numbers but can overgrow when the immune system or skin barrier is compromised. Other mites, such as scabies (Sarcoptes), are highly contagious and spread through contact with infected animals or contaminated environments.
Can fleas or mites spread to my home or family?
Yes. Fleas readily infest homes, with only a small percentage of their life cycle occurring on your dog. The majority of flea eggs, larvae, and pupae are actually found in the environment, making treatment of both the pet and the home essential.
Some mites, particularly scabies mites, can temporarily affect people and other pets, causing intensely itchy skin lesions until the source animal is treated.
Can indoor dogs still get fleas or mites?
Absolutely. Indoor dogs still go outside for walks and bathroom breaks, and fleas can be brought into the home on other pets, wildlife, clothing, or shoes.
Likewise, contagious mites can spread through contact with infected animals, while Demodex mites may become problematic when a dog's immune system allows overgrowth of organisms that are normally present.
What skin problems do fleas and mites cause?
Fleas are one of the most common causes of itching in dogs. Even a single flea bite can trigger severe itching in dogs with flea allergy dermatitis, resulting in intense scratching, hair loss, skin infections, and significant discomfort.
Heavy flea infestations can also cause anemia, particularly in puppies or small dogs.
Mites can produce a wide range of dermatologic problems, including:
- Severe itching
- Hair loss
- Red, inflamed skin
- Crusting and scaling
- Secondary bacterial or yeast infections
- Ear disease (depending on the mite species)
Scabies mites often cause extreme itchiness, while Demodex mites may produce patchy hair loss or widespread skin infections.
Although ticks themselves rarely cause itching or allergic skin disease, they can transmit infectious organisms that occasionally result in dermatologic manifestations or systemic illness. In some cases, tick-borne diseases may contribute to nail disease, including claw inflammation or nail loss, and appropriate testing may be recommended when clinically indicated.
How effective are flea, mite, and tick preventatives?
Modern prescription parasite preventatives are highly effective and have dramatically improved parasite control.
Many oral and topical prescription products provide protection against fleas while also treating or preventing certain mite infestations and tick exposure. Your veterinarian can recommend the product that best fits your dog's lifestyle and medical needs.
Unfortunately, there are no reliable over-the-counter products that effectively prevent or treat many mite infestations. This is one reason we frequently diagnose mites in dogs that have been receiving non-prescription parasite control.
What is the difference between over-the-counter and prescription products?
Prescription products have undergone extensive testing for safety and efficacy and are regulated for veterinary use. Many older over-the-counter products have reduced effectiveness due to parasite resistance or may not adequately cover the parasites most relevant to your pet.
Your veterinarian can help select a product that provides comprehensive flea, mite, and tick protection appropriate for your dog's risk factors.
What parasite prevention will my veterinarian recommend?
For most dogs, we recommend year-round prescription flea prevention because fleas are a common cause of allergic skin disease and can survive indoors throughout the year.
Depending on your dog's lifestyle and geographic location, your veterinarian may also recommend products that provide protection against mites and ticks. The ideal medication depends on your dog's medical history, travel habits, and risk of exposure.
What should I do if I suspect fleas or mites?
If your dog develops sudden itching, hair loss, recurrent skin infections, or crusting, schedule a veterinary examination promptly. Early diagnosis and treatment can prevent severe discomfort and secondary infections.
At Dermatology Clinic for Animals, we routinely evaluate dogs for flea allergy dermatitis, mite infestations, secondary infections, and other causes of chronic skin disease. We also perform testing for tick-borne diseases when appropriate, particularly in patients with compatible clinical signs such as nail disease or systemic illness.
If you have questions or would like to schedule an appointment, call us at (360) 350-4756 or email [email protected]. We're here to help your dog feel comfortable again.