Phonological Dyslexia
Students can’t break down individual sounds of language (phonemic awareness) and match them with written symbols.

Surface Dyslexia
Kids with dyslexia may have particular trouble with words that don’t sound the way they’re spelled, such as weight or debt. They may also take longer to be able to recognize common words by sight.

Rapid Naming Deficit
Kids with this issue can’t rapidly name letters and numbers when they see them. They can say the names, but it takes them longer to name many of them in a row. Experts think this problem reflects an issue with processing speed. They also think it’s linked to reading speed.

Double Deficit Dyslexia
Kids with double deficit have trouble isolating sounds. And they can’t quickly name letters and numbers when they see them. This usually adds up to a more severe form of dyslexia that is particularly challenging to remedy.

Visual Dyslexia
Visual dyslexia can refer to a range of things, often suggesting an unusual visual experience when looking at words. This term sometimes describes the challenge of surface dyslexia. Kids can’t recognize whole words by sight. The reason most likely is that their brains find it difficult to remember what the word looks like.