I had asked for some further information and have not heard back. There are several issues to consider in this situation. The usual treatment for Zoon's balanitis is a low to moderate potency steroid cream. I asked which steroid cream has been prescribed because if it is a low potency steroid cream, it would be reasonable to change to a moderate potency steroid cream. Another option would be to add an anti-fungal cream. In some men, they will respond better to an anti-fungal cream added to the steroid cream. If these treatments are ineffective, the next step to consider would be a calcineurin inhibitor, such as tacrolimus. These medicines suppress the immune system causing the inflammatory response in the skin. The other option would be to consider a procedure to treat the problem, either by circumcision to remove the foreskin or laser to remove the upper layers of skin that is involved by the inflammation.
If you have any further questions or need clarification, please let me know.