Taking Voriconazole And Prednisone Since November 12th For Aspergillosis Fungus

Taking Voriconazole and prednisone since November 12th for aspergillosis fungus in lungs. I work outside daily and have been getting severe sunburns on hands and face since mid January. using sunscreen, gloves, large sunhat but in just a few minutes, not in direct sun, I get sunburned... like on my eyelids and under eyes.
yesterday my skin tore on my hand when I brushed against some metal.
I think these two medicines are the cause of these sunburns and tearing of skin.
your thoughts?