An insect bite may result in inflammation of that spot. This is triggered by the alarm chemicals such as

Step-by-step solution

Inflammation is common to almost all diseases that involve microbiologic, chemical, or physical injury to living tissues. Acute inflammation may be defined as the microcirculation response to injury, the cardinal signs are heat, redness, pain, swelling, and loss of function. The accompanying microcirculatory changes comprise arteriolar vasodilation, increased small vein permeability, formation of edema fluid, and WBC migration to the site of injury. Histamine is stored in mast cell granules and basophils and is rel