Bite by bug, have pus, red and swollen, itch, hair hard how to do

This phenomenon occurs, first need to use soda water and other alkaline solvent cold compress affected area, timely neutralization of toxins. Then you need to go to the hospital dermatology department in time, under the guidance of the doctor to use dexamethasone ointment, desonide cream external application, usually need to pay attention to skin hygiene.