EnlargeUNIVERSITY OF BONN reader comments 12 Share this story At some point or another, every weary parent wonders if their toddler’s hair is an impossible tuft of snags and snarls. But for a few rug rats, tangled hair is a real problem. Enlarge / Struwwelpeter in a 1917 edition.Heinrich Hoffmann A rare genetic condition, called Uncombable Hair Syndrome,...