Steroid is a life saving miracle drug but misused so often.

But for answers, one needs to know:
Proper description of patch? investigations done like biopsy etc? And about medicines, For how long did she use it? What type of dosing? Route of use: topical or oral?

Weight loss, hair loss may definitely be due to steroid but there are many other causes for it. If she thinks its serious, she needs to change her doc and get second opinion urgently rather than continuing with those medicines.

By the way, what was the diagnosis given to her for that patch?