For over a month now I've been scrubbing my fingernails constantly because they look dirty and have this brown stain on several of them that I thought was from hair color and wondering why it won't scrub off. It's because it's not a stain from hair color but is a uncommon symptom of Addison's disease. And even given this new finding i still don't qualify for insurance at this time and could be another month before I hear anything and even then it's not guaranteed....