Developmental milestones: cognitive development.

Dyslexia

A cognitive disorder characterized by an impaired ability to comprehend written and printed words or phrases despite intact vision. This condition may be developmental or acquired. Developmental dyslexia is marked by reading achievement that falls substantially below that expected given the individual's chronological age, measured intelligence, and age-appropriate education. The disturbance in reading significantly interferes with academic achievement or with activities of daily living that require reading skills. (From DSM-IV)

Malformations Of Cortical Development

Abnormalities in the development of the CEREBRAL CORTEX. These include malformations arising from abnormal neuronal CELL PROLIFERATION or APOPTOSIS; abnormal neuronal migration; and abnormal establishment of cortical organization via neurite extension, synaptogenesis, or neuronal maturation. As well as mutations effecting these developmental processes directly, there are a variety of inborn metabolic errors, such as PEROXISOMAL DISORDERS and mitochondrial and pyruvate metabolic disorders which effect them secondarily and also exhibit these malformations. They are common causes of EPILEPSY and developmental delay and are often a component of multiple congenital anomalies.

Muscle Development

Developmental events leading to the formation of adult muscular system, which includes differentiation of the various types of muscle cell precursors, migration of myoblasts, activation of myogenesis and development of muscle anchorage.

National Institute Of Child Health And Human Development (u.s.)

Component of the NATIONAL INSTITUTES OF HEALTH. It was initially established to investigate the broad aspects of human development as a means of understanding developmental disabilities, including mental retardation, and the events that occur during pregnancy. It now conducts and supports research on all stages of human development. It was established in 1962.

Developmental Disabilities

Disorders in which there is a delay in development based on that expected for a given age level or stage of development. These impairments or disabilities originate before age 18, may be expected to continue indefinitely, and constitute a substantial impairment. Biological and nonbiological factors are involved in these disorders. (From American Psychiatric Glossary, 6th ed)