allergic disease的意思|示意

Allergic Disease：

Allergic diseases refer to a group of illnesses caused by allergic reactions to an allergen-related stimulus. Allergens can be a variety of things including pollen, dust mites, animal dander, food, and medicines. Symptoms vary depending on the type of allergy, but can include:

1. Skin reactions: These reactions typically involve itching, swelling, redness, and a rash. They can range from mild to severe and can take place anywhere on the body.

2. Respiratory reactions: These reactions can include sneezing, coughing, wheezing, and difficulty breathing.

3. Digestive system reactions: These reactions can result in nausea, vomiting, and diarrhea.

4. Eye reactions: These reactions can include redness, itching, and watering.

It is important to note that allergies can be controlled or managed through avoidance of the allergen, medications, or immunotherapy. Avoidance of an allergen usually involves removing the allergen from the environment. Medications can include antihistamines, decongestants, and corticosteroids. Immunotherapy is a form of treatment in which an individual is slowly exposed to increasing amounts of the allergen in order to desensitize the immune system.

In summary, allergic diseases refer to a group of illnesses caused by an allergic reaction to an allergen-related stimulus. Symptoms vary depending on the type of allergy. Allergies can be managed through avoidance of the allergen, medications, or immunotherapy.