Contact Dermatitis More Condition_symptoms How Are Allergic And Irritant Contact Dermatitis Diagnosed?

How are allergic and irritant contact dermatitis diagnosed? - contact dermatitis more condition_symptoms

My plan is to take my dog to a canine dermatologist now, would the vet allergic contact dermatitis and eye irritant. What exactly is the dermatologist to diagnose the problem with my dog? I know I will not tell the whole story of my dog's health and examine them physically, but there are other indications that they are doing?