Thanks for the query,
and fascia plantaris are inflammatory condition,
are the most commonly used drugs.
The alternatives can be other steroid sparing agents like azathioprine
But these can be given only when your condition is stable.
Please meet a dermatologist
for exact diagnosis and treatment.
Let me know if you have any other doubt.
you can ask a direct question to me on this forum, following the below link.
Wishing you a good health.