Itchy skin: allergies vs. infection

Itch is one of the most common reasons dogs see a vet — and one of the most misdiagnosed at home. The trick is not treating "itchy" like a diagnosis. It's a symptom with several possible causes.

Fleas first, always

Before we do anything else, we rule out fleas. A single flea can trigger weeks of misery in an allergic dog. Consistent monthly prevention isn't optional if itch is on the table.

Environmental allergies

Seasonal itch, paw-licking, face-rubbing, and ear infections that keep coming back are classic signs. Environmental allergies are managed, not cured — a good plan reduces the itch enough that daily life feels normal.

Food allergies

Real food allergies are less common than the internet suggests and require a strict elimination diet to diagnose, not a switch to a boutique bag. If we suspect food, we'll walk you through what that trial actually looks like.

Skin infections

Red, greasy, smelly, or crusty skin usually means secondary bacterial or yeast infection on top of the original itch. Those need medicated baths or oral medication to clear — no amount of allergy management works while a live infection is roaring.

When to book

If your dog has been itching more than a couple of weeks, has hair loss, hot spots, or recurrent ear infections, a video visit is a good next step. We can look at the skin, look at the ears, and put a real plan together — including whether you need in-person cytology.