Mental retardation is defined as a below average intellectual functioning. It is assessed by standard IQ test. An IQ of 80 to 130 is normal, 100 is average, and below 70 is retarded. Mental retardation results in an inability to deal with the normal responsibilities of life. Retardation is classified as mild (IQ 50 to 70), moderate (IQ 35 to 49), severe (20 to 34), or profound (IQ less than 20), with mild retardation the most common form (over 80% of cases).
Causes of Mental Retardation
Causes include: genetic, inborn errors of metabolism, chromosome disorders, down syndrome is the most common genetic disorder, intrauterine congenital infections, placental-fetal malfunction, complications of pregnancy (infections, preeclampsia, eclampsia, maternal alcohol or drug abuse or malnutrition), perinatal (just before the birth), prematurity, postmaturity, birth injury, metabolic disorders, postnatal (after birth), endocrine or metabolic disorders, infection, trauma, toxic and other causes of brain damage, and abuse.
Signs and Symptoms of Mental Retardation
Many mildly retarded children are often identified when they enter school. Academic skills like math and reading are done more slowly, and emotions may be more immature. There may be development delays such as speech and language problems, motor skills, sensory defects (slow in responding to people, sounds, toys, etc.), and neurological impairments. Other symptoms include: seizures, fecal and urinary incontinence, hearing problems, hyperactivity and involuntary movements. More severely retarded children are often diagnosed at birth.
advertisement
Find more information
Advertisement
Medical Content Last Updated on 07/12/2008
Disclaimer
The information contained on this site is for the sole purpose of
being informative. This information is not and should not be used or relied upon as medical
advice. Always seek the advice of your physician, nurse
Or other qualified health care provider before you undergo any treatment or
for answers to any questions you may have regarding a medical condition.
If you believe you have a medical emergency, please discontinue use
of MyElectronicMD and call 911 now.
Nothing contained on or provided through the service is intended to be or is
to be used for medical diagnosis or treatment.
Your use of this site is subject to certain terms and conditions.
