Chronic allergies cause itchy skin, which can progress to bacterial infections. (yourpurebredpuppy.com)
For dogs with chronic allergies or conditions that require daily doses, consult your veterinarian about the appropriate dosage, as it may change over time. (atlantalabrescue.com)
Skin problems are common, especially chronic allergies that cause itchy skin and scratching that can break the skin and lead to infection (hot spots). (yourpurebredpuppy.com)