Steroids can be injected or taken orally so that they circulate and influence the entire body—systemic steroids—or they can be used topically. Topical steroids are safer than injected or oral steroids because so little is absorbed that the possibilities of side effects are minimal. Examples of prescription systemic steroids include Prednisone and Methylprednisolone . Examples of prescription topical steroids include eye drops such as Prednisolone Acetate Ophthalmic Suspension (for dogs), hair conditioner (ResiCort®), or Genesis Topical Spray (for dogs).
Hypoadrenocorticism is treated with fludrocortisone (trade name Florinef)   or a monthly injection of Percorten-V ( desoxycorticosterone pivalate , DOCP) and prednisolone or Zycortal.     Routine blood work is necessary in the initial stages until a maintenance dose is established.  Most of the medications used in the therapy of hypoadrenocorticism cause excessive thirst and urination. It is absolutely vital to provide fresh drinking water for a canine suffering from this disorder. 
Cyclosporine: Cyclosporine can be used to control atopic dermatitis in dogs and allergic dermatitis (including atopy) in cats. The medication is given once a day for 4 weeks (4 to 6 weeks in cats, based on response). After that, the dose can be tapered to every other day or twice weekly, as needed to maintain effectiveness. Researchers estimate that over 70% of dogs and cats respond to this treatment; however, cyclosporine can be costly, and its side effects may include stomach upset and diarrhea. Ask your veterinarian if cyclosporine may be a good choice for your pet.