The stem of Ephedra, for example, was used to relieve asthma symptoms, coughs, colds and allergies.
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Early trials of an experimental drug, called DNK333, have shown it can reduce asthma symptoms.
But it urged caution because children's weight can have a significant influence on asthma symptoms.
People living near the site claim to be suffering from nosebleeds, coughing and sneezing and worsened asthma symptoms.
The children were examined at age one, two, four and 10, when parents were also asked about allergy problems or asthma symptoms.
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Outdoor play can provide vitamin D, too, which is linked not just to bone health but to reduced asthma symptoms, eczema severity, and diabetes.
For years, public health researchers have been running projects that demonstrate that asthma symptoms can be substantially reduced by working in homes to remove or clean moldy carpets, provide indoor air filters and reduce infestations of dust mites and cockroaches.
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In particular, eating fruit such as apples is thought to improve lung function, which may help children with asthma control their symptoms.
In a trial of 85 people with mild asthma, the symptoms of those using the Papworth method alongside drugs were significantly eased, Thorax reports.
These reactions cause the airways to become narrower and irritated, which leads to the symptoms of asthma - such as wheezing, shortness of breath and a tight chest.
It said that exposure to the smoke from the pyres can exacerbate the symptoms of asthma, and that people less than half a kilometre from even small pyres may be exposed to high concentrations of irritants such as sulphur dioxide.
Dr Gabriele Nagel, one of the authors, said this may be because asthma is a collection of symptoms rather than a single condition, and different things may trigger it in different parts of the world.
Thunder storms can exacerbate the symptoms of people with asthma.
Dr Bernard Higgins of BTS said he believes the recommendations will "reduce a worsening in symptoms for patients with mild asthma".
Although further research is needed, we do already know that air fresheners and bleach trigger symptoms in people who already have asthma.
The action plan may use peak flow measurements and symptoms to categorize your child's asthma into zones, such as the green zone, yellow zone and red zone.
His other symptoms were probably the result of allergies and mild asthma, they said.
He points out that people with asthma may think they have COPD, or vice versa, since the symptoms are similar.
As her symptoms continued to increase, she made an appointment with the Carolina Asthma and Allergy Center.
Asthma patients taking Advair and other drugs containing salmeterol are advised to monitor their symptoms closely and to have a clear plan to seek help if their symptoms get worse.
In tests on more than 4, 000 patients, Xolair was able to dramatically reduce asthma complications and lessen patients' need for high doses of inhaled steroids to control their symptoms.
And the researchers warned the symptoms associated with this, such as breathlessness, could have been wrongly interpreted as asthma.
Millions of people with asthma use inhalers, like Advair, that give them long-lasting relief from the wheezing, suffocating symptoms of the disease.
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