Vet Warns: Hidden Red Marks on Dogs Could Signal a Serious Allergy

BBC vet Dr. James Greenwood recently shared crucial information on BBC Morning Live about how dogs can develop allergies to common household items, food, and even the environment.

One key warning sign? Red marks hidden under wet fur, which could indicate a painful condition known as acute moist dermatitis, or “hotspots.”

Common Allergy Triggers for Dogs

Dr. Greenwood explained that indoor allergens like dust mites, washing powder, and even storage mites can cause skin reactions in pets. But food allergies are often overlooked. Contrary to popular belief, grain isn’t the most common culprit—dogs are more likely to be allergic to proteins like chicken, beef, lamb, dairy, and eggs.

To help prevent allergies, he recommends:

• Opting for single-source protein foods (such as turkey, duck, or fish)
• Considering hydrolyzed diets (where proteins are broken down to avoid immune reactions)
• Consulting a vet before changing your pet’s diet

How to Treat Skin Infections and Allergies

If you notice sticky, wet fur patches — especially in breeds with thick coats like Golden Retrievers, Labradors, or St. Bernards — check for red marks underneath.

These painful hotspots can develop from minor scratches or irritations and worsen if untreated.

Dr. Greenwood also advised pet owners to watch for ringworm and dandruff, as these could signal deeper skin conditions. While some owners turn to antihistamines, he warned that there are no licensed antihistamines for pets, and their effectiveness is questionable. Instead, he emphasized:

• Always consult a vet before giving any medication from your own medicine cabinet
• Consider medicated shampoos or natural remedies like colloidal oatmeal
• Explore vet-approved allergy treatments such as monthly injections or tablets

Ultimately, the key to keeping your pet healthy is early detection and professional guidance.

If your dog is constantly scratching, developing skin infections, or has unexplained red marks, don’t rely on social media quick fixes. Schedule a vet visit to identify the real cause.

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