An allergic disease refers to a condition where the body's immune system overreacts to certain substances, causing a range of symptoms. There are different types of allergic diseases, such as asthma, eczema, and allergic rhinitis, among others. Synonyms for allergic disease include hypersensitive reaction, allergy disorder, allergic condition, and allergic disorder. These terms are often used interchangeably to refer to any condition that results from an abnormal immune response to allergens. Treatment for allergic diseases typically involves avoiding triggering allergens, using medication to manage symptoms, and immunotherapy in some cases. People with allergic diseases should seek medical attention to properly diagnose and manage their condition.