weigh in. Be weighed; also, be of a particular weight. For example, Because it was such a small plane, the passengers and their luggage had to weigh in before takeoff , or The fish weighed in at 18 pounds. [Late 1800s] See also: weigh.
Asthma and allergic diseases, such as allergic rhinitis (hay fever), food allergy, and atopic dermatitis (eczema), are common for all age groups in the United States.
If your allergic reactions are severe, your doctor may ask you to keep a journal that details your symptoms and the substances that appear to cause them. Your doctor may want to order tests to determine whatâs causing your allergy. The most commonly ordered types of allergy tests are: 1  skin tests.he symptoms of an allergic reaction can vary from mild to severe. If you become exposed to an allergen for the first time, your symptoms may be mild. These symptoms may get worse if you repeatedly come into contact with the allergen.