Asthma caused by the skin of livestock


Occupations

  • Animal breeder
  • Agriculteur
  • Farmer
  • Food industry
  • Groom (Palefrenier)
  • Jockey
  • Shepherd
  • Stable hand (Lad)
  • Veterinary surgeon,
Agents
Cows (Bovins), Deer, Goats, Horses, Mink, Sheep.
 
Incidence
Incidence: on the increase in large farms. Use of milking machines can aggravate the condition. Subjects are almost always atopic. The mechanism is IgE-dependent. For mink farming, the risk is greater during the reproductive periods.
 
Conditions
Sensitization to skin, urine and/or epithelia.
 
Other allergens may be responsible for the asthma: flours; moulds, medicines, foodstuffs or fur.
 
Symptoms
Besides less significant symptoms such as chronic cough and dyspnoea, classical asthma may occur, initially appearing to be uniquely linked to contact with animals then becoming more permanent. A recurrent coryza, urticaria and pruritus may also be present. According to some studies, 18% of animal breeders complain of work-associated rhinitis.
 
Diagnostic methods
Skin prick test with the allergens encountered at work (in hospital).
 
A bronchial provocation test with the allergen in question is definitive for the diagnosis.
 
RAST/CAP RAST.

References

  1. J. Occup. Environ. Med. 2001, 43:576 - Mustajbegovic J. et al.
  2. Ann. Allergy Asthma Immunol 1996,76:423 - Dong-Ho Nahm et al.
  3. Allergy 1996,51(5):364 - Jimenez Gomez I. et al.
  4. Allergol. et Immunopathol. 1997,25:259 - Valero Santiago A.L.
  5. Clin. Exp. Allergy 1997,27:617 - Hollander A. et al.
  6. Clin. Exper.Allergy 1992,22:83
  7. Int. Arch. Allergy. Appl. Immunol. 1986,81:253
  8. Rev. Fr. Allergol. 1977,17:251

As in all diagnostic testing, the diagnosis is made by the physican based on both test results and the patient history.