Hi, just a quick question, I have severe COPD, and have developed Sleep Apnea and Angina, my question is over the last 6 months or so I have noticed brown " dirt " like patches on tops of my feet and slightly on my shins!!!!!! They have not disappeared or got any worse, don't itch it's just peculiar and looks like I have walked through a load old dusty dry mud, or not washed my feet for ages!!!!!!!!!!!
Has anyone else expierenced anything similar?