Figure 1

Species-specific diagnostic methods to confirm pollen allergy. Generally in allergic diseases of humans, dogs, cats and horses a careful anamnesis in context with the clinical picture is uttermost important. *) To consider differential diagnoses belongs to the primary work up of allergies; **) In pruritic cats consideration of metabolic, neoplastic, infectious and organic disorders is necessary because cutaneous reactive patterns are not pathognomic for allergy; ***) In horses it is especially important to rule out differential diagnoses like other skin diseases e.g. Erythema multiforme as an alternative cause for urticaria.