My thanks to eHow, Dr Diane Sawyer (who is speaking in the film) filmmaker Dimitri LaBarge, and YouTube for making this video available.
In this 2 minute, 18 second video, Dr. Sawyer discuss the different types of dyslexia, which include phonological dyslexia, orthographic dyslexia, dyscalculia and dysgraphia, all of which present difficulties in different areas of speech and reading.
I disagree, mildly, with Dr. Sawyer's view as presented in this video. She lumps dysgraphia and dyscalculia in with dyslexia. I don't agree.
Dysgraphia can be a bit confusing. It includes people who have difficulty accurately, rapidly, and automatically forming letters, which it might be possible to remediate. It also includes people who may not have difficulty with handwriting per se, but may have difficulty actually capturing their thoughts in print.
Dyscalculia isn't really a part of dyslexia, and may have a different neurological cause. Look under the category struggling mathematicians for more information.
