If retardation is caused by chromosomal or other genetic disorders, it is often apparent from infancy.
Maternal infections and such illnesses as glandular disorders, rubella, toxoplasmosis, and cytomegalovirus (CMV) infection may cause mental retardation
Ludwick Szymanski has written: 'Mental Retardation & Genetic Disorders'
No. They can cover different types of conditions. A retarded person often has learning difficulties, whereas mental disorders are more psychological and don't always impair the intelligence of a person.
Steven B. Coker has written: 'Developmental delay and mental retardation' -- subject(s): Child Development Disorders, Developmental disabilities, Diagnosis, Mental retardation, Therapy
The Answer is: an inherited disease due to faulty metabolism of phenylalanine, characterized by phenylketones in the urine and usually first noted by signs of mental retardation in infancy.
Those who do not die may experience permanent blindness, mental retardation, seizure disorders, or loss of motor control
Overstudy does not cause mental retardation.
TThere are quite high as it comes in different types of mental retardation.
Exposure to lead can also cause mental retardation.
literature review on mental retardation with reference
Peter Sturmey has written: 'Psychometric assessment of psychiatric disorders in people with learning difficulties (mental handicap)' 'Clinical and counseling practice' -- subject(s): Psychotherapy, Counseling, Practice 'Mood Disorders in People with Mental Retardation'
diagnosis and management of epilepsy and other seizure disorders. It is also used to assist in the diagnosis of brain damage and diseases such as strokes, tumors, encephalitis, mental retardation, and sleep disorders.