Fantastic photographs!
Move slider on Picture for comparisons!!
Sleep is essential for the normal
functioning of the human body. The duration of essential sleep varies from
one individual to another. Some people may feel fresh and energetic after 6
hours of sleep while others may need to sleep for 8 hours Babies need most
sleep and may sleep for almost 16 hours a day. Teenagers need an average of 9
hours, and for most adults, an average of 8 hours of sleep a day suffices.
Though the amount of sleep needed remains constant with increasing age, older people tend to sleep less. This is particularly noticeable in males. Older females tend to sleep as long as younger ones. Older people also spend less time in deep sleep than younger people. |
What
are the various stages of sleep?
|
There are five stages of sleep ranging from the lightest
to the deepest sleep. When someone sleeps, he goes through stages 1,2,3,4 and
REM (rapid eye movement) sleep. During the first four stages, a person
gradually drifts from light sleep to very deep sleep. During the fifth stage,
sleep again starts becoming lighter and eye movements begin. In the first
stage, the person can be woken up easily. The brain activity does not slow down.
In the second and third stages, the individual goes into deeper sleep. The
brain activity slows down and eye movements stop completely. The fourth stage
is the stage of complete deep sleep. Most sleepwalking and bedwetting occur
in this stage. There are no dreams in this stage.
It is during the fifth stage of REM sleep that a person dreams. The eye movements begin and the body muscles become tense. Breathing becomes rapid and brain activity increases. There is also a rise in blood pressure. |
Any condition that causes a disturbance in sleep or due to
which an individual is unable to complete his quota of required sleep is
called a sleep disorder. The main types of sleep disorders are – sleep
apnoea, narcolepsy, restless legs syndrome and insomnia.
Besides these children have a number of sleep related problems.
7.
Nocturnal
enuresis - tendency to pass
urine in sleep, in clothes. This affects 1 in 10 children between 4-14 years.
In a child in whom control was never established it is usually a matter of
development delay and will come under control with time. The best treatment
is to use an alarm to wake the child in the middle of sleep and send him to
pass urine. A useful drug is imipramine (depsonil) and gentle
education. Where control over urine was established and then enuresis
restarts one should look for the possibility of a spinal lesion in the lumbar
region.
8.
Nocturnal
terrors - patient gets up
frightened may cry hold tight to relation and have a fast pulse and in short
time settle down. It may be mistaken for epilepsy. It can occur each night.
9.
Sleep
walking - this is not a
form of epilepsy and does not imply psychiatric disorder and child may walk
about at night for a while and then return and lie down. This usually clears
by itself. One has usually only to ensure that the child does not hurt
himself in such episodes.
|
Most countries have specialised sleep
clinics where people with sleep disorders are treated. These clinics have
specialised personnel and equipment
to diagnose the condition and carry out rehabilitation of patients with
incurable sleep disorders. India, unfortunately, does not have too many
specialised sleep clinics but facilities are increasing in the major cities.
A patient can usually consult a neurologist for medical help.
Lifestyle changes like regularising sleep patterns, eating lighter meals, reducing weight and taking short frequent naps during the day may help. However, a doctor’s opinion should always be sought in case such a condition is detected. |