1. **Itching and Scratching**: One of the most common signs of allergies is excessive scratching or biting at the skin. Dogs may focus on certain areas like their paws, ears, or belly.
2. **Red or Inflamed Skin**: Allergies can cause the skin to become red, inflamed, or develop rashes. Look for areas that seem irritated or have a different color than the surrounding skin.
3. **Hot Spots**: These are localized areas of inflammation and infection that can develop from excessive licking or scratching. They are often painful and require veterinary treatment.
4. **Ear Infections**: Dogs with allergies often suffer from ear infections, which can cause shaking of the head, scratching at the ears, or a foul smell coming from the ear.
5. **Watery Eyes and Runny Nose**: Allergies can cause a dog’s eyes to water and their nose to run, similar to how humans react to allergens.
6. **Vomiting or Diarrhea**: In some cases, food allergies can lead to gastrointestinal upset, including vomiting or diarrhea. This may occur shortly after eating.
7. **Swelling**: Swelling of the face, particularly around the eyes and muzzle, can be a sign of an allergic reaction and may indicate a more serious condition known as anaphylaxis.
If you notice any of these signs, it’s important to consult with your veterinarian to determine the cause of the allergy and the best course of action for treatment. They may recommend allergy testing, dietary changes, or medications to help manage the symptoms.
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