tricho–rhino–phalangeal syndrome type 2 tricho–rhino–phalangeal syndrome type 2 tricho–rhino–phalangeal syndrome type 2 (also known as langer–giedion syndrome) is a genetic disorder consisting of fine and sparse scalp hair, thin nails, pear-shaped broad nose, and cone-shaped epiphyses of the middle phalanges of some fingers and toes.: 578 tricho–rhino–phalangeal syndrome type 2other namestrichorhinophalangeal syndrome with exostosis it has been associated with trps1.