How do I keep track of my dog's allergy medication and itching?

Allergic itch rarely has a one-week fix. Merck calls atopic dermatitis a lifelong disease that needs long-term management, and flea allergy and food allergy can join in or look similar. Treatment is often trial and adjustment, and the most useful thing you can bring to each vet visit is a clear record: what was given, how itchy your dog was, and when things changed.

A daily itch score

Itch is hard to describe from memory (“she’s been scratching a lot”). A small daily score is easier to compare. In the Apoquel label’s field studies, owners rated their dog’s itch every day on a 10 cm scale, and that owner score was how treatment success was measured. You don’t need the exact scale at home.

Practical tips (no veterinary source):

• Score itch once a day at the same time, from 0 (no scratching) to 10 (scratching, licking or chewing most of the time you watch).
• Note where: paws, ears, face, belly, back near the tail.
• Take a photo of the worst patch once a week in the same light. It shows change better than words.

What else to write down

Alongside the score, a useful line has:

• Medicine: what was given, when, and who gave it, including shampoos, ear drops and flea treatment.
• Missed or late doses, so a flare a day or two later makes sense.
• Flare-ups: the date, the body area and any likely trigger (a walk in long grass, a new food or treat, a missed flea treatment, the start of pollen season).
• Ears and skin: head shaking, smelly ears, red or crusty skin. Merck notes that long-term or recurrent ear infections may be the only sign in some dogs, and Cornell’s Riney Center says allergies can lead to bacterial and yeast skin infections.
• Food: if your dog is on an elimination diet, everything eaten, treats included.

To keep doses and notes on one printed page, try the free medication log.

Flea allergy, atopy or food?

The cause shapes the treatment, so it is worth knowing which your vet suspects. Merck describes:

• Atopic dermatitis (environmental allergies; Cornell’s Riney Center mentions pollens and mould spores): itch that most often affects the feet, face, ears, front legs and belly, with paw licking and face rubbing.
• Flea allergy dermatitis: an allergy to flea saliva, classically crusted, itchy skin over the hips, base of the tail and thighs. Merck notes it is unusual in dogs under one year old. Parting the fur slowly often shows flea dirt, which turns reddish brown on a damp paper towel.
• Food allergy: less common than airborne allergies. Merck says blood and skin tests are not reliable for it; it is diagnosed with a strict elimination diet trial, where only new ingredients are fed.

Your log helps here too: itch centred on the base of the tail, or itch that follows a missed flea treatment, is a clue worth showing your vet.

Medicines and what to expect

Cornell’s Riney Center lists the main options: antihistamines for mild itch, corticosteroids for more severe itch, Apoquel (an oral medicine), Cytopoint (an injectable antibody that reduces itching), allergy shots, and shampoos, rinses, wipes and mousses. Merck adds that treatments for sudden flare-ups often differ from those for long-term control, and that most veterinary dermatologists prefer immunotherapy, given as injections or drops, though improvement may not be visible for many months.

Each medicine has its own label, side effects and rules. The Apoquel label, for example, says it is for dogs at least 12 months old, can be given with or without food, and that dogs on it should be monitored for signs of infection. Which medicine, how much and how often is your vet’s decision. Ask for the plan in writing, including what to do after a missed dose.