Will canine acne go away on its own?

Mild acne may sometimes improve on its own, but if there is pus, ongoing redness and swelling, or behavioural change, a vet should assess your dog and decide whether treatment is needed.

What tests will a veterinary dermatologist perform?

Common tests include skin smear cytology, bacterial culture, and, when needed, skin biopsy and blood tests to help identify infection or other causes.

How can I reduce canine acne flare-ups?

Management may include local cleaning, improving the environment or diet, and addressing underlying allergies or infection. Long-term follow-up and care adjustments according to your vet's advice can help reduce recurrence.

What information should I bring to the appointment?

Bring a symptom timeline, close-up photos and videos, a list of current medications, and any previous test or treatment records so the vet can quickly understand your dog's history.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

We couldn't detect where you are, so we're showing this market. Pick yours so the nearby-clinic links point to the right place.

Disease Guide

Canine Acne in Dogs: Symptoms, Diagnosis & Care [2025]

Canine acne commonly affects the chin and lips of short-coated breeds, and most cases improve with cleaning and topical medication.

Take 1 minute to check the symptoms first

Last updated: 2026/01/04

Pethealthmap Editorial Team

Sources: WSAVA, AVMA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek immediate veterinary care (emergency)

•Extensive skin pus with persistent foul-smelling discharge
•Ruptured wound with heavy bleeding or fluid discharge
•Persistent lethargy or a clearly reduced response to stimulation

Schedule a veterinary appointment soon (within 24-72 hours)

•Localized skin redness and swelling with persistent significant pain
•Repeated scratching or ongoing hair loss in the affected coat area
•Appetite or activity level is clearly reduced, but the dog can still eat

01What Symptoms Suggest Something Is Wrong?

Canine acne usually causes localised blackheads, pustules, and redness, sometimes with pain or behavioural changes.

Localised blackheads or whiteheads that may develop into pustules
Pulling away or showing signs of pain when the affected area is touched
Visible skin redness, swelling, scabbing, or blocked pores
Localised hair loss or persistent scratching, licking, or chewing of the area
If the infection spreads, changes in energy level or appetite may occur
Arrange a dermatology or general veterinary consultation for assessment

Seek emergency care immediately if you notice the following symptoms:

⚠️ Extensive pus in the skin with ongoing discharge and a foul smell
⚠️ A ruptured wound with heavy bleeding or fluid discharge
⚠️ Persistent lethargy or reduced response to stimulation

02How Can You Assess Changes at Home? Key Observations and When It May Be Urgent

Before seeing the vet, you can observe and record information at home. The details below can help your vet assess the condition more quickly.

Record when the problem started and how the symptoms have changed over time
Take close-up photos and short videos to document skin lesions and behaviour changes
Watch for any changes in appetite, drinking, urination, or bowel movements
Weigh your dog daily or record activity level and general demeanour
Note any medications, washes, or recent changes in environment or diet
Bring your notes and images to the clinic for the vet to review

03How Will the Vet Diagnose It? Common Tests

Your vet will use a clinical examination and any necessary tests to identify infection or an underlying cause, then decide on the treatment plan.

Physical examination

assesses lesion distribution, pain, and overall skin condition

Cytology (skin smear)

checks for inflammatory cells and signs of infectious organisms

Skin biopsy (histopathology)

evaluates chronic or complex skin lesions

Bacterial culture and susceptibility testing

guides antibiotic selection

Blood tests

assess indicators of systemic infection or chronic disease

Advanced imaging such as CT, or referral to a specialist, may be arranged if needed

04How Is It Treated and Managed After Diagnosis? Medication, Diet Changes, and Care

Treatment focuses on controlling infection and helping the skin heal, with regular follow-up to reduce the risk of recurrence.

Local cleaning and warm compresses to reduce bacteria and support healing
Your vet will decide whether oral or topical antibiotics are needed
Severe or recurrent cases may need short-term anti-inflammatory treatment and specialist follow-up
Review and adjust the diet, or avoid contact with known allergens
Attend follow-up visits as directed to review culture results and wound healing progress
Dogs with repeated flare-ups should be referred to a veterinary dermatologist for further assessment

05What Should You Prepare Before Seeing the Vet? Key Details That Help Identify the Cause

Write a detailed record of when symptoms began and how they have progressed

Prepare close-up photos of the skin lesions and short videos of overall activity

Record recent changes in food, treats, and the home or outdoor environment

List all current medications, topical washes, and supplements

Bring previous test reports or treatment records, if available

Book ahead with a clinic that can manage skin problems where possible

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.