Late phase allergic asthma, or late phase asthma, is a type of asthma that is characterized by a late reaction to an allergen. It is thought to be caused by an immune system response that is delayed by several hours, but can last for up to 24 hours. Symptoms of late phase allergic asthma include wheezing, chest tightness, coughing, and difficulty breathing.
Symptoms of Late Phase Allergic Asthma
The most common symptom of late phase allergic asthma is wheezing. This is a whistling or squeaking sound that is heard when a person breathes. Other symptoms include chest tightness, coughing, and difficulty breathing. These symptoms can be severe and can last for up to 24 hours.
Causes of Late Phase Allergic Asthma
Late phase allergic asthma is thought to be caused by an immune system response that is delayed by several hours. This response is triggered by exposure to an allergen, such as dust mites, animal dander, pollen, mold, or smoke. The body then releases chemicals, such as histamine, that cause inflammation in the airways and lead to the symptoms of late phase allergic asthma.
Treatment of Late Phase Allergic Asthma
Treatment for late phase allergic asthma is similar to that of other types of asthma. It usually involves avoiding allergens and taking medications to reduce inflammation and open up the airways. Inhaled medications, such as corticosteroids, may be used to reduce inflammation of the airways and prevent future attacks. Other medications, such as leukotriene modifiers, can also be used to prevent and treat late phase allergic asthma.
