Disability through history is a very complex subject due to many circumstances and situations but especially due to the lack of information and ignorance that in some centuries and years the world lived.

Starting from the definition or meaning of the word: Disability,some people use the word: Handicapped,people with disadvantages,People with Special Needs or cripple, I think the word: Disabled is the best word for describing our condition.

Lack of Information in the sense that for years the topic about disability was a taboo,this combinated with the ignorance that through years people in our world showed about disabled people or disability issues,in many cultures being disabled was (sadly is still considered) as a Punishment of God,also being disabled was a sign of being weak or inferior,with less value as a human being,due to their limitations, disabled people were killed or forced to live in the dark (hidden from other people), some other disabled people were abandoned in hospices, hospitals and mental institutions because their families couldn't "take care of them",and/or they were more "a problem for their lives" than being considered as defenseless human beings with feelings and emotions,sadly there is also the fact that for centuries and even nowadays we disabled people can be seen as freaks or less than animals,just we have to remember the case of The Elephant man-Joseph Merrick, he suffered Neurofibromatosis/Proteus syndrome

So,the silence and the veil about disabled people and disabilities was better for some centuries and also for the people,that is why we don't have too many facts and not even a chapter that speaks and teaches Disabilities through history.