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.
Symptoms & Types. Learn the types of allergies including food allergies, seasonal allergies, pet allergies, and many more. Respiratory Allergies. Spring Allergies There's no cure but you can take steps to curb springtime allergies, from medication to household habits. Summer Allergies Summer allergies are usually triggered by pollen from grasses and weeds. Fall Allergies Ragweed, mold and dust mites are the biggest allergy triggers in the fall. Winter Allergies If you have indoor allergies such as mold and dust mites, you may notice symptoms more during winter, when you spend more time inside. Hay Fever Hay fever, also known as allergic rhinitis, is an immune disorder characterized by an allergic response to pollen grains and other substances.