Steroid cream is absorbed from the skin in small amount, so periodic assessment of the liver functions (every 3 months) should be done. Steroid is treatment of Sarcoidosis, so while there is likely benefit, there can be side effects and one has to be vigilant about them by periodic blood work.
Please feel free for your follow up questions.
It varies with the individuals and some people may not have any damage. So if periodic blood tests are normal, there is no problem and it can be continued.
It is privilege assisting you.