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.
Rashes fall into three general categories: infectious, inflammatory, and immune system-related. 1  Infectious rashes: These rashes are most commonly bacterial, fungal or viral infections.  Inflammatory rashes: There are many different types of inflammation.