constituting or forming a large number; numerous: many people. noting each one of a large number (usually followed by a or an): For many a day it rained. a large or considerable number of persons or things: A good many of the beggars were blind. the many, the greater part of humankind. many persons or things: Many of the beggars were blind.
Hives and angioedema can be caused by: 1  Foods. Many foods can trigger reactions in people with sensitivities. 2  Medications. Almost any medication may cause hives or angioedema. 3  Common allergens. Other substances that can cause hives and angioedema include pollen, animal dander, latex and insect stings.  Environmental factors.
List of possible virus causing hives. The relationship between hives and virus in children is the most prevalent. It is estimated that greater than 80% of hives in children are caused due to their reaction to a viral infection. The appearance of urticaria and virus that cause them are partially listed below:1  Common cold.2  Human Immunodeficiency virus.he relationship between hives and virus in children is the most prevalent. It is estimated that greater than 80% of hives in children are caused due to their reaction to a viral infection. The appearance of urticaria and virus that cause them are partially listed below: 1  Common cold. 2  Human Immunodeficiency virus.