Hot Spots (Superficial Pyoderma) in Dogs
One of the most painful and upsetting skin problems we see in dogs is the Hot Spot — a fast-spreading bacterial skin infection.
What is a Hot Spot?
A hot spot often starts as a mild itch or small sore but can quickly become a moist, red, oozing wound within 24 hours.
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A crust may form over the hair, hiding the damage underneath.
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The infection (often Staphylococcus bacteria) thrives in the moist, trapped environment under the coat.
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Left untreated, hot spots can double in size each day.
Common Triggers
A hot spot usually develops secondary to another problem, such as:
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Skin allergies
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Moist skin folds
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Small scratches or wounds
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Flea bites or insect bites
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Irritation from grooming cuts
Once the skin is broken, bacteria multiply rapidly and inflammation escalates.
Surrounding skin can develop smaller “satellite lesions” that soon merge into the main infected area.
How Fast Can a Hot Spot Grow?
Hot spots can double in size within 24 hours.
Even areas that look normal can hide satellite lesions — small infected spots that can quickly merge into the main wound.
Under the microscope, hot spots are filled with neutrophils (the main cells in pus) and often bacteria. These are signs of active infection.
Treatment
Prompt treatment is essential to stop the infection spreading. We may:
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Clip and clean the wound (sometimes under sedation or anaesthetic for comfort and thoroughness)
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Apply an E-collar to stop scratching or chewing
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Give medication to reduce irritation (such as Cytopoint® or tablets)
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Prescribe antibiotics to control infection
Severe cases can cause systemic illness and require hospitalisation with intravenous fluids, antibiotics, and pain relief.
Prevention
Some breeds, like Golden Retrievers and Labradors, are more prone to hot spots. Prevention focuses on skin care and early treatment of small irritations:
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Use regular flea and tick prevention
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Manage skin allergies with a veterinary plan
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Bathe with antibacterial shampoos like Pyohex®
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Treat small wounds promptly with soothing creams
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Consider a shorter clip in warmer months for easier skin care
If your dog is prone to hot spots, act at the first sign of scratching — and call us straight away.
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