1. **Itching and Scratching**: One of the most noticeable signs is excessive itching or scratching, often leading to skin irritations or infections. Dogs may scratch their ears, belly, or paws more frequently.
2. **Red or Inflamed Skin**: Allergies can cause redness or inflammation on the skin, particularly in areas that are frequently scratched or licked.
3. **Hot Spots**: These are localized areas of inflammation and infection on the skin, often caused by constant licking or scratching. They can be very painful and may require veterinary treatment.
4. **Ear Infections**: Allergies can lead to recurrent ear infections, which may present as a dog shaking its head frequently, scratching at its ears, or having a foul odor coming from the ear canal.
5. **Watery Eyes or Runny Nose**: Just like humans, dogs can experience watery eyes or nasal discharge due to allergies, especially if they are allergic to environmental allergens like pollen or dust.
6. **Digestive Issues**: Some dogs may experience gastrointestinal symptoms such as vomiting, diarrhea, or gas, particularly if they have food allergies.
7. **Changes in Behavior**: Allergies can also affect a dog's behavior, leading to increased irritability or restlessness due to discomfort.
If you notice any of these signs, it’s advisable to consult with a veterinarian for proper diagnosis and treatment options. They may recommend allergy testing or a change in diet, along with medications to manage your dog's symptoms.
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