- Ceramic industry
- Petrochemical industry
Nickel, Nickel salts.
Incidence: low, however all subjects who are exposed to nickel and develop asthma symptoms must be investigated because the disease is severe and can develop into chronic bronchopathy.
Atopy does not appear to play an important role. A positive nickel patch test has no predictive value to judge the likelihood of developing asthma. Skin tests producing an immediate result are not always reliable and may be dangerous.
Manufacture of stainless steel, enamelling of steel, production of fats, edible oils and batteries.
Cough and breathing difficulties at first followed by asthma during and after work. Initially, symptoms are associated with work but become permanent. Urticaria and angioneurotic oedema are observed in addition to classic eczema lesions.
Skin prick test: 0.1, 1, 10 and 100mg/ml NiSO4 or 0.1mg/ml NiSO4.6H2O.
Immunological assay: RAST (special coupling) with NiSO4-HSA.
A bronchial provocation test (in hospital) is the most reliable diagnostic tool.