I have Aphantasia it could be a form of Autism, Dysgraphia which I seem to have.
No Minds Eye ( no mental image) a condition called
APHANTASIA 2.5% of the population have it.
BBC story
http://www.bbc.com/news/health-34039054
Aphantasia forum group http://aphant.asia
Hope this helps someone
Tony
wiki
Aphantasia is a hypothesized neurological condition [1] where a person does not possess a functioning mind's eye. The term was first suggested in a 2015 study for a specific kind of visual agnosia.[2] Further studies are being planned.[3] The term was coined by the team led by Prof. Adam Zeman of the University of Exeter Medical School.
note major revision, as
spam?