Mental handicap is an inability to think and act properly because of the blocking of thinking power due to mental conflict and lack of intellectual maturation.
There are three main types of mental handicap:
Mental retardation
Learning Disabilities
Mental disorders
Mental retardation is
classified as
Cretinism: is a severe (congenital) thyroid deficiency
during childhood and leads to physical and mental deficiency. Cretins exhibit dwarfism
because the skeleton fails to grow and mature.
Down syndrome: is an inherited defect due to an extra copy
of chromosome 21. Such individuals usually have 47 chromosomes instead of the
normal 46
Hydrocephalus: is abnormal accumulation of fluid in the
brain of a baby. In time the fluid build up compresses and damages the delicate
tissues of the nerveous system and causes mental retardation
Microcephalus: is when the individual displays an
abnormally small head
Causes: Hereditary factors, inefficient functioning of
thyroid glands, biochemical defects, malnutrition, intake of harmful drugs
Rehabilitation is possible for trainable and mild
retardation. There are special education schools that provide the necessary
facilities to enable them gain basic education.
Learning Disabilities
This type of mental handicap shows symptoms of mental
retardation. The difference is that of intelligence. Learning disables are of
normal intelligence but are unable to learn because of some neural
deficiencies. They are slow learners and require special education facilities.
The most common type of learning disability is dyslexia
Dyslexia: is an impairment of the brains ability to
translate images received from the eyes into understandable language. It causes
a difficulty in processing words and symbols. Letters in words seem reversed or
upside down. For e.g. ‘dog’ becomes ‘god’. Dyslexics frequently reread portions
of paragraphs or skip words and change the order of letters in a word.
The exact cause of dyslexia is unknown. PET scans show that
in persons suffering from dyslexia the left side of the brain is more active
than the right.
Mental disorder
Mental disorder is a maladjustment because of
malfunctioning of thinking.
Many individuals suffer from emotional, behavioral and
personality disorders. These disorders cause mental handicap and malfunction
Mental disorders are of two types:
Psychosis: Persons lose sense of reality. They think from
only their own point of view.
e.g. schizophrenia is a serious disorder. Individuals have
continues delusions and hallucinations
Neurosis: is a mild mental disorder which causes
malfunctioning of thinking. For e.g. split personality.
The causes of this disorder are hereditary factors and
environmental factors.
It is difficult to treat psychosis. Medication and
psychotherapy help treat neurosis. However treatment depends upon the
individual and his / her acceptance of the need to be treated.
It is important to understand and be patient with people
suffering from these disorders.
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