Allergens more frequently involved in allergy of horses (Equus caballus domesticus)

Most horses (45%) were sensitized to storage mites (Tyrophagus putrescentiae). Dust mites (Dermatophagoides farinae y Dermatophagoides pteronyssimus) account for 25% of the positive, while Rumex crispus account for 35%; 25% were sensitized to grasses (Dactylis glomerata, Phleum pratense or Secale cereale); and 15% of the horses were sensitized to Birch (Betula spp.). No horse tested positive for fungal allergens (Alternaria alternata, Cladosporium herbarum, Aspergillus fumigatus, Penicillium notatum, Helmintosporium halodes, Epicoccum nigrum, Epicoccum purpurascens, Fusarium culmorum, Ustilago tritici and Rhizopus nigricans). Environmental allergens that cause human disease are relevant for our domestic horses. The treatment of choice is to avoid contact with allergens. Allergen immunotherapy is a reliable instrument to reduce clinical symptoms in horses.