Bronze stain looking spots on my palms and soles of my feet

About 3 weeks ago, I started noticing brownish/orange spots on my palms, around my cuticles, and under my fingernails. Washing my hands did no good, and after 3 days, they'd go away. About 4 days later, they reappeared and in greater number too. I went to the doctor and had blood work done, but everything came back ok. I do not use a self-tanner, don't work with any chemicals, or eat enough carrots for it to be carotene related. It started coming back yesterday and now it's all over my palms. Does anybody have any answers as to what it might be? Please help!! Thanks!

[klh2007]

Last week the same exact thing started happening to me. It went away for a few days but I just woke up with more spots all over my hands. I'm freaking out about it and have no idea what it could be. I don't use a self tanner either, nor do I work with chemicals or eat carrots. Did you find out what it was? Please please let me know!