Dyslexia is a disease that targets the brain. An easy way to explain it is that your eye is like a camera. The camera only takes the picture like the eye, the film in the camera is sent to the developing studio, which is like the eye sending the picture to the brain. Then when they give you back the photo, you can understand the color and detail, that's like when your brain finally processes the information and makes sense out of it. When you have dyslexia, your brain doesn't process the picture from your eye fully so you can't really understand what you're seeing sometimes. This is because someone with dyslexia would process the information with the right side of his/her brain to write and read while some without dyslexia uses his/her left side to read and write. The left side of a brain is better at writing and reading than the right side.
When the information enters the brain from the eye the corpus callosum, which is the bridge between the two halves of a brain, sends the information to the right side instead of the left side and since the right side can't interpret that information as well, it sometimes end up scrambled.
Mental disabilities are more common than you think. About
15 to 20% of the people have a mental disability and about 5 to 10 % have dyslexia. Dyslexia affects more men than women. The disabilities all differ from how you get them and how it affects you. Dyslexia is a genetic defect. Often, someone with a mental disability will act loudly to distract the teacher or quietly to evade the teacher. It is possible to overcome dyslexia, but many give up at a young age and grow up to be an unemployed adult.