Any topical cream (steroid cream) side effects?

Yes: Allergic reactions primarily and sometimes the reaction to inert contents of the cream itself.

Potentially.: Applying a strong steroid cream for too long on thin skin (face, groin, underarms, etc.) will eventually cause thinning of the skin (atrophy) and eventually stretch marks (striae). That's why dermatologists cringe when they see strong steroids prescribed for areas that are too sensitive to handle them properly. Strong creams should be used only on thick skin for a couple of weeks at most.