In the case of the hairdresser, the hair lacquer spray contains sericin Asthma,rhinitis and urticaria. Atopy is a less important predisposing factor than bronchial hyperreactivity. Asthma and dyspenea symptoms occuring towards the end of the working day may continue for several hours after work. Diagnosis References Skin prick test. J. Allergy Clin.
Incidence is much higher amongst smokers.
IgE-dependent mechanism, however irritants play a role. Atopy is an aggravating factor. In other forms of welding, such as welding tin, cases of asthma caused by zinc chloride have been described. Sensitization is caused by fumes from the metals, chromium, nickel, cobalt, zinc, aluminium and vanadium. For example, asthma caused by zinc fumes has been reported in galvanization plants.