Did anyone else have brown spots on your fingertips and toes during ABVD?

I am about seven treatments in (out of 12 total) for ABVD to treat Hodgkin's lymphoma. I've been getting brown spots on the tips of my fingers and my toes for the past few weeks, though a giant brown spot appeared at the base of my middle finger and palm months ago. I also noticed a brown mark--almost a bruise--on my rib cage. I thought maybe my bra had irritated that area in the heat, but it really looks like a bruise. Does this have anything to do with my liver? Or is it related to the tingling side effects? The doctor I saw yesterday seemed to think it was sun-related, but this new mark on my ribcage hasn't been in the sun.

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