Allergic Asthma

• Allergens like pollen, dust and pets can trigger asthma. In certain seasons, especially the spring and fall when flowers, trees and grasses are releasing pollen, allergic asthma is worse than at other times.
  
  

Exercise-Induced Asthma

• In some people, asthma is only present when induced by exercise. Physical activity will lead to bouts of coughing or wheezing.
  
  

Nocturnal Asthma

• Those with nocturnal asthma experience symptoms mostly or only at night. This will typically occur early in the a.m. when the body's natural adrenaline and corticosteroids are at their lowest.
  
  

Asthma in Pregnancy

• Pregnancy has been shown to have a direct effect on asthma. Most patients will either see improvement in the condition or a worsening of it.
  
  

Occupational Asthma

• Exposure to certain elements in the workplace can cause or exacerbate asthma. This can be anything from chemicals used for cleaning to fumes from a plant atmosphere.
  
  

Other Asthma

• Some of those with asthma have no underlying cause. The condition could come with an illness like a cold or flu, or be brought on occasionally be irritants like tobacco, perfumes or paints.