flagellate pigmentation can b due to drugs like bleomycin, shiitake mushroom poisoning, in dermatomyositis
Infrequently, bleomycin can cause a serious, allergic-like reaction. It is most common in lymphoma patients. Before your main treatment with this drug begins, your doctor may direct you to receive a smaller test dose to check for signs of this serious reaction.
To me it seems like a series of self inflicted, or another person inflicting on (abuse), scratch marks .. The pictures are not clear, but bruising and what appears to look like finger scratches are evident.. Really rough sex maybe?? The hands photo is what may exclude this diagnosis. As there appears to be swelling of the knuckles and swelling between the fingers.. difficult to tell as the photos are rather subjective and ambiguous..