I have developed some darkness on the side of my nose along the inside corner of my eyes.  might it be due to inefective sleep habits or occasional alcohol use?  my hunch is that the discoloration may be due to blood flow, since there is no irritation in the area.  I do where glasses, but they dont touch those areas.
The dark discoloration around your eyes maybe due to bad sleeping habits and stress or maybe hereditary also. But the discoloration around your nose maybe seborrhea dermatitis or Chat Doctor.  Do use a sunscreen on regular basis and consult a dermatologist. Sleep well!!!