Can you get learning disorders from being on prednisone and vinblastine?

Perhaps. Neither Prednisone nor vinblastine are directly linked to learning disorders. However, Prednisone can cause irritability, mood swings, sleep problems & vincristine can cause fatigue and depression which all can interfere with learning. Please discuss your concerns with your oncologist. She may be able to switch you to drugs you tolerate better. It may be possible to better support your learning.
Yes. There is growing evidence that treatment for cancer with drugs and/or radiation canresult in memory and learning problems especially over en extended treatment period.