Can Depression Pills Cause Purple Spots With Scabs On Body?

i start to notice that i have had purlpe spots. and never iched. and not im breaking out in a rash. and the purple spots got wider and have a scab on them.and my rash is starting to get dark to. they say its because of depression.because my tongue is purple.but im already taking depression pills.and iv always had this marks that recently started changing