Dr John Costello, the respiratory physician from King's College Hospital, London, who led the research, says: “We want to alert the public to the danger. Quite clearly, some people will have died as a result of a severe asthma attack triggered by aspirin or another painkiller.
“But what I would say to asthmatics is that if they are well and have taken aspirin without side-effects, they should continue - particularly if they have had it prescribed for something such as heart disease to thin blood.”
Doctors think that the real incidence of painkiller-induced asthma may have been disguised by the fact that not all cases have been reported either by patients or hospitals. “Some people may have had only a mild attack or not even realized it was induced by a painkiller,” says Dr Costello.
While most non-steroidal painkillers have the capacity to trigger asthma, paracetamol appears to pose the least danger. However, the study does point out that even so, seven per cent of asthma sufferers were affected by it.
Those sensitive to aspirin can normally expect an attack to develop within 30 minutes of taking it, say experts. But the effect might be cumulative - as more tablets are taken - and it could be several days before a reaction occurs.
Many asthmatics have their disease well under control and an attack can come like a bolt from the blue. Linda Evans, 56, from Bourton, near Swindon, suffered a severe attack while out shopping, after taking a painkiller containing aspirin.
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