Morgellons disease causes black, white, red, or blue fibers to appear under the skin or protrude from it. People may also feel like something is crawling under their skin. The exact cause is ...

Red and blue fibers have been a longtime ingredient of U.S. currency paper. Special features like these fibers are embedded in currency paper to ensure that reproduction is difficult. While some ...

The sensation of little bugs crawling all over you. And worst of all, mysterious red and blue fibers sprouting from your skin. It may sound like a macabre science fiction movie, but a growing ...

From each shape, the researchers can infer the most likely path of the various nerve fibers (red and blue lines) passing through that spot. Another image of the peanut-shaped blobs that represent ...