This is an attempt to reprogram the cat s immune system so it no longer over-reacts to flea bites. If successful, itching no longer occurs or is less intense when the cat is bitten. This is often a necessary part of dealing with flea allergy. Some cats respond best to long-acting injections and others to oral medication. For this reason, the goal is to administer the smallest amount of steroid needed to keep the cat comfortable.
Some cats develop a secondary bacterial infection in the skin.
When this occurs, appropriate antibiotics must be used. An injection of steroids was given. Relief should be apparent within 12-24 hours. If not, please call your vet. Your cat should feel better and itch less for about one month.