Page 101 - 84 human physiolofy part-1

Senses

• Does not enjoy baths, haircuts, nail clipping
• Requires tags to be removed from all clothing
• Does not want their face touched
• Hard time eating because of textures, temperatures of the food
• Does not want to touch anything that is messy or has a sticky texture

Congenital insensitivity to pain with anhidrosis or CIPA
Exceedingly rare disease. There are only about 35 known cases in the United States. CIPA is a
severe autosomal recessive condition in which the peripheral nerves demonstrate a loss of
unmyelinated and small myelinated fibers. The actual physiopathological mechanism is still
unknown and being studied- this is an extremely hard disease to study due to the rarity of cases.
Most people with the disease will not live long due to injuries received that go untreated because
they are unknown and severe

Case Study

Insensitivity to pain

Wouldn't it wonderful if you could no longer feel pain. Is that not something we all would like to
have? Or do we have pain for a good reason? Although it is rare there is a disease known as congenital
insensitivity to pain. This genetic abnormality cause some people to lack certain components of the
sensory system to receive pain. The exact reason for the problem is unknown and varies between
people. Sadly people who have the disease die in childhood. Injuries are very common with people who
have congenital insensitivity to pain. They often will lose digits, may suffer from burns and their knees
often have sores from kneeling to long. Clearly pain has a purpose, it is our warning signal when things
are awry.

The newborn's senses

Newborns can feel all different sensations, but respond most enthusiastically to soft stroking,
cuddling and caressing. Gentle rocking back and forth will oftentimes calm a crying infant, as will
massages and warm baths. Newborns may comfort themselves by sucking their thumbs, or a pacifier.
The need to suckle is instinctive and allows newborns to feed.

Vision
Newborn infants have unremarkable vision, being able to focus on objects only about 18 inches
(45 cm) directly in front of their face. While this may not be much, it is all that is needed for the
infant to look at the mother’s face when breastfeeding. When a newborn is not sleeping, or
feeding, or crying, he or she may spend a lot of time staring at random objects. Usually anything
that is shiny, has sharp contrasting colors, or has complex patterns will catch an infant's eye.
However, the newborn has a preference for looking at other human faces above all else.

Hearing
While still inside the mother, the infant can hear many internal noises, such as the mother's
heartbeat, as well as many external noises including human voices, music and most other sounds.
Therefore, although a newborn's ears may have some fluid present, he or she can hear sound from

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