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.
1 Runny or stuffy nose due to irritants (instead of allergens). 2  Eye allergies, known medically as allergic conjunctivitis, due to inhaled allergens or foods. 3  Mild allergic skin reactions, such as hives. 4  Dermatographism (a severe form of hives due to physical triggers such as touch, heat, or cold).