In the last week or so, out of nowhere it seems, I've developed some very small red dots on my fingertips, predominantly on my left hand, not so much on the right. Their redness varies day to day. They are very slightly raised, tender to the touch but not itchy or blistered, there is no fluid in them. The tender feeling is similar to having big splinters under the skin. I've noticed that when my hands are quite cold the bumps look worse. The skin on my fingertips appears quite dry also, especially where the bumps are worst. My fingertips feel almost tingly. I have one or two of these same bumps on the tips of my big toes also, although these are far less tender.
Any ideas what it could be? I've never really had any skin complaints before besides ordinary teen acne.