Dogs get skin infections from bacteria, yeast, or parasites, often as a secondary problem when allergies (food, fleas, environment), poor grooming, moisture, or a weakened immune system compromise the skin barrier, leading to excessive scratching, chewing, redness, and pus. These infections occur when normal skin microbes overgrow in damaged or irritated skin, creating inflammation and discomfort.

What causes skin infections on dogs?

Bacterial Dog Skin Infection (Pyoderma)

Bacterial infections are among the most common types of dog skin infection, typically caused by Staphylococcus bacteria. This dog skin infection often develops as a secondary condition when the skin barrier is compromised due to allergies, parasites, or other underlying issues.

How do I treat a skin infection on my dog?

Treatment of Fungal Dermatitis & Staph Infection in Dogs

Staph infections are typically treated with oral antibiotics. Antibacterial shampoo or topical ointments can be used for these types of skin conditions. Depending on the severity of the infection, treatment may take several weeks to have an effect.

How did my dog get a bacterial infection on his skin?

What causes pyoderma in dogs? Bacterial skin infection occurs when the skin's surface has been broken, the skin has become injured due to chronic exposure to moisture, the normal skin bacteria have been altered or changed, the blood flow to the skin has become impaired, or the immune system has been suppressed.

What does infected dog skin look like?

A dog skin infection looks like red, itchy, inflamed skin with symptoms like redness, bumps (papules/pustules), crusts, scales, hair loss, oozing (pus/serum), scabs, thickened skin, and a foul odor, often accompanied by excessive scratching, licking, or chewing. The skin might appear flaky, moist, darkened, or have pimple-like lesions, requiring veterinary attention to diagnose the cause (bacterial, fungal, etc.) and underlying issues. 

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How serious is a dog's skin infection?

The severity of the disease depends on the type of infection and can vary from very mild to painful and itchy. Some organisms that cause skin infections are transmissible (or contagious), which means the infection can be passed to another mammal through direct contact or the environment.

What does a skin staph infection look like on a dog?

In dogs, Staph infections can look like red bumps/pimples (papules) or pus-filled (pustules), or round areas with a red or dark center and red crusty border. Hair loss occurs and sometimes the hair comes out in clusters resembling a paint brush.

Can dog skin infection go away on its own?

Skin infections typically respond extremely well to treatment, but usually don't clear up on their own. If you think your dog might have a skin infection, it's important to have them diagnosed and treated appropriately.

Can stress cause skin infections in dogs?

Absolutely, stress and anxiety can indeed cause skin conditions in dogs. For instance, compulsive disorders where dogs constantly lick at an area can lead to skin problems. Sometimes, dogs with separation anxiety or other compulsive disorders can chew at their skin, causing issues.

How do dogs act when they have a bacterial infection?

Most Common Bacterial Infections in Dogs

Symptoms of leptospirosis may include fever, lethargy, depression, vomiting, and redness of the mucous membranes. In the case of serious infection, a dog can develop kidney inflammation, which can result in permanent damage to the kidney.

How to naturally get rid of dog skin infection?

Advise owners to:

1. Bathe using tepid water.
2. Massage the shampoo gently in by hand, first onto the areas most affected (rather than pouring it down the back).
3. Wash the rest of the dog and leave the shampoo on the skin for 10 minutes before rinsing.
4. Soak crusts that are tightly adherent, which helps loosen them gently.

Can dog skin infections spread to humans?

If the wound comes into contact with the pet's skin infection and then the wound is not washed, it is possible that the pet's Staph could spread to the human.

What is the best medicine for dog skin infection?

The best dog medicine for skin infection depends on the infection type. For bacterial infections, veterinarians often prescribe Cephalexin or Clindamycin, while Ketoconazole or Fluconazole are commonly used for fungal infections. Always consult a vet for accurate diagnosis and treatment.

What is the most common bacterial skin infection in dogs?

The most common bacterial skin infection seen in dogs is a staph infection (Staphylococcal infection). This skin infection is caused by the bacterium Staphylococcus sp which can be transmitted between dogs and humans, making good hygiene and early treatment a high priority for this skin infection.

What are the first signs of infection in dogs?

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• Changes in Eating or Drinking Habits.
• Unusual Behavior or Mood Shifts.
• Digestive Upset: Vomiting or Diarrhea.
• Breathing or Coughing Concerns.
• Skin and Coat Changes.
• Sudden Weight Gain or Loss.
• Mobility Issues or Limping.
• Eye or Nose Discharge.

How did my dog get a skin infection?

Affecting up to 15% of the dog population, atopic dermatitis is one of the most common causes of skin infections in dogs. Skin allergies include flea allergies, environmental allergies and food allergies. Allergic dogs often wear down their skin due to excessive scratching, leaving it vulnerable to infection.

Why does my dog keep getting staph skin infections?

Staph bacteria naturally live on your dog's skin without causing problems. Infections develop when the skin barrier breaks down, allowing bacteria to multiply. Common triggers include allergies that lead to scratching, chronic moisture from swimming, and underlying health conditions that weaken the immune system.

What do vets give dogs for skin infections?

Prescription Antibiotics: The Heavy Hitters

Cephalexin (Keflex) is often veterinarians' first choice for treating bacterial skin infections in dogs. This antibiotic belongs to the cephalosporin class and effectively targets the Staphylococcus bacteria commonly responsible for canine pyoderma.

How often should a dog bathe with a skin infection?

In some cases, your veterinarian may recommend daily or every-other-day bathing to help control the infection and soothe the skin. In other cases, less frequent bathing may be appropriate.

What does Bacterial infection look like on a dog?

Superficial Pyoderma in Dogs

It often appears as pustules around hair follicles (folliculitis), hair loss (alopecia), round, red lesions with a flaky edge, and crusty, scaly skin.

What does a skin yeast infection look like on a dog?

A dog's skin yeast infection looks like red, greasy, flaky, or crusty skin with a strong, musty odor, often accompanied by intense itching, hair loss, and dark, leathery patches (elephant skin) in chronic cases, with common areas being paws, skin folds, and ears.
 

What does bacterial folliculitis look like in dogs?

Bacterial folliculitis in dogs looks like red bumps, pimples (pustules), and scabs, often with hair loss and crusts, especially on bellies or thighs, appearing as "moth-eaten" patches in short-haired dogs or a dull coat in long-haired ones, with intense itching or licking being common signs of this common bacterial skin infection, also known as superficial pyoderma. 

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