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.
What is allergic asthma? Allergic asthma is the most common type of asthma. Asthma symptoms begin when the body reacts to something a person is allergic to, such as pollen, pet fur, feathers, mites or mould. Allergic asthma tends to run in families where there's a history of asthma or other allergies, such as hayfever.