With the UK's fifth heatwave of the year forecast to bring temperatures above 35°C in parts of the country, dog owners are being urged to watch for signs of skin issues in their pets. Hot weather creates ideal conditions for dogs to develop painful, itchy skin spots, and one symptom in particular can signal a developing problem.
What is a 'hot spot'?
Dr Sarah Page-Jones, head veterinary surgeon at Pet Drugs Online, said the first sign of a skin condition is what's known as a "hot spot"—acute moist dermatitis. She explained: "Acute moist dermatitis (hot spot) is especially common in thick-coated breeds during summer, when heat and humidity combined with excessive scratching and licking start to irritate the skin."
These spots appear as red, inflamed, and sometimes oozing lesions on the skin. Dr Page-Jones added: "If your pet develops a hot spot, always seek veterinary care. Your vet is likely to shave and clean the infected area, provide topical treatments, and give a protective collar to prevent further licking."
Other summer skin risks
Hot weather can also cause flea allergic dermatitis (FAD), as warmer conditions make fleas breed faster. Dogs sensitive to flea bites can experience intense discomfort. Dr Page-Jones advised: "To avoid flea allergic dermatitis, keep your pet up to date with prescription flea treatments to prevent infestations and the allergic reactions they can trigger."
She added that environmental management may be necessary, including household sprays, regular washing of bedding, and regular hoovering. "Treating flea allergic dermatitis starts with a trip to the vet, where they can prescribe the correct treatment to kill fleas and relieve symptoms," she said.
Pollen allergies in dogs
Just as summer can worsen pollen allergies in humans, the same applies to animals. Atopic dermatitis, caused by exposure to high pollen counts, can lead to extreme itchiness in dogs. It is a lifelong condition, but seasonal flare-ups are common.
Dr Page-Jones explained: "Environmental allergens such as grass and weed pollens spike during the warmer months. This can cause pets to itch excessively, chew their paws, lick their groin, or rub their faces." Affected pets may have red, inflamed skin and a persistent stale odour due to damaged skin barriers and secondary infections.
To combat flare-ups, regular grooming keeps coats free of dirt and debris. After walks, rinsing paws and tummies can remove excess pollen.
