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.
Strictly, allergy is one of four forms of hypersensitivity and is called type I (or immediate) hypersensitivity. â¢ Allergic reactions occur to normally harmless environmental substances known as allergens â¢ Reactions are acquired, predictable, and rapid â¢ Include eczema, hives, hay fever, asthma attacks, food