What is allergy march? Explain.

In the beginning, allergy often appear in favorable and peaceful conditions in the primary period (age) such as hay fever. It is true that many people gradually develop allergic conditions over many years before they experience any symptoms relating to it. Sometimes, unfortunately, a certain food or drug or an ordinary insect-bite becomes the cause of sudden life-threatening which start as eczema or gastrointestinal problem. Such condition. turns into asthma involving respiratory symptoms.

Therefore this direct path of development is widely referred to as the allergy march.