Perfume stinks: how fragrances can affect your health
Fragrances and fragranced products cause health problems, such as asthma and headaches, in 1 in 3 people. Find out what you can do if you experience symptoms.
What causes asthma?
Trusted information on the causes of asthma and factors that increase the likelihood of developing asthma, and links to trusted resources
Allergies and hypersensitivities
An allergic reaction occurs when the immune system overreacts to a foreign substance that usually causes few or no problems in most people.
Thunderstorm asthma is triggered by a combination of thunderstorms and a high pollen count. Even people who’ve never had asthma can experience it.