New genetic test for chinese crested dogs - Canine Multiple System Degeneration (CMSD) is now available on Ortopedic Foundation for Animals
CMSD - Canine Multiple System Degeneration also is known as PNA - Progressive Neuronal Abiotrophy.
Read more:
http://www.caninegeneticdiseases.net/ataxia/Atx-main.htm
http://animalsciences.missouri.edu/animalgenomics/OBrian_J_Heredity_2005.pdf
DNA test:
http://www.offa.org/dnatesting/cmsd.html