Patricia S. Lemer, M.Ed., NCC, M. S. Bus., Chairman of the Board, Epidemic Answers Nosology?  According to Webster, it’s the systematic classification of diseases. I first heard the term from Sid Baker at the 1999 DAN! Conference.  He drew a tree, using the latest PowerPoint technology, to demonstrate the absurdity of this concept by applying it to his socks. He has blue, brown, black, grey and white socks; summer and winter socks, dress, casual and sports socks.   And orphan socks, waiting for the dryer to spit back their mates. Sid neatly placed each category on a separate branch.  Unlike trees, for which a single leaf identifies its class, socks fit multiple categories:  color, season and use.  So do disorders like ADHD, autism, language delays, sensory processing disorder and learning disabilities. I recently met a webmaster who still has autism labeled as an “emotional disturbance” on his site. I suggested that he move it to “biological disorders.”  “You mean it’s genetic?”…