Dyslexia

Developmental reading disorder, also called dyslexia, is a reading disability resulting from the inability to process graphic symbols.
Symptoms

• Difficulty determining the meaning (idea content) of a simple sentence
• Difficulty learning to recognize written words
• Difficulty rhyming
• May occur in combination with writing or arithmetic learning problems

Having dyslexia is a serious disability. It makes it so when a person is reading they will fix a problem in a sentence naturally in their head without realizing that they have or they can miss spell a word as long as the first and last letter are correct they will read it as correct. so when criticizing someone on their grammar you need to make sure that you are being sensitive to the fact that the person may be reading the problem already corrected in their head.