The ABO system consists of A, B, AB, and O blood types. People with type A have antibodies in the blood against type B. People with type B have antibodies in the blood against type A. People with AB have no anti-A or anti-B antibodies.
Developmental dyslexia, or specific reading disability, is a disorder in which children with normal intelligence and sensory abilities show learning deficits for reading.
Once your child is in school, dyslexia signs and symptoms may become more apparent, including: 1  Reading well below the expected level for your child's age. 2  Problems processing and understanding what he or she hears. 3  Difficulty comprehending rapid instructions.4  Problems remembering the sequence of things.hen to see a doctor. Dyslexia is characterized by a delay in the age at which a child begins to read. Most children are ready to learn reading by kindergarten or first grade, but children with dyslexia often can't grasp the basics of reading by that time.