Diseases and Disorders
Leukemia
The
cause of most human leukemia is unknown. It is a kind of cancer in which
abnormal white blood cells multiply in an uncontrolled manner. they interfere
with the production of normal white blood cells. Leukemia affects the
production of red blood cells.
Bursitis
Bursitis
is a disorder that causes pain in the body's joints. It most commonly affects
the shoulder and hip joints. It is caused by an inflammation of the bursa,
small fluid-filled bags that act as lubricating surfaces for muscles to move
over bones. This inflammation usually results from overactivity of an arm or
leg.
Osteoporosis
is a disease resulting in the loss of bone tissue. In osteoporosis, the
cancellous bone loses calcium, becomes thinner, and may disappear altogether.
A
sprain is an injury to a ligament or to the tissue that covers a joint. Most
sprains result from a sudden wrench that stretches or tears the tissues of the
ligaments. A sprain is usually extremely painful. The injured part often swells
and turns black and blue.
Spina
bifida
Spina
bifida is a spinal defect that is present at birth. In spina bifida, the spinal
cord does not form properly and the vertebrae and skin cannot form around it.
Spina bifida results from an error in the development of the embryo that occurs
about a month after a woman becomes pregnant. This error may have various
causes, including the use of alcohol or certain medications by the pregnant
woman or exposure to extreme heat. Genetic factors appear to be very important.
Scurvy
is a disease caused by lack of ascorbic acid (vitamin C) in the diet. If a
person does not get enough vitamin C, any wound he or she might have heals
poorly. The person also bruises easily. The mouth and gums become sore. The
gums bleed, and the teeth may become loose. Patients lose their appetite, their
joints become sore, and they become restless.
There
are more than 100 diseases of the joints referred to as arthritis. Victims of
arthritis suffer pain, stiffness, and swelling in their joints.
Osteoarthritis, also called
degenerative joint disease, occurs when a joint wears out. Many elderly people
have osteoarthritis, and the disease may also occur if a joint has been injured
many times. The joints most frequently affected are those of the hands, hips,
knees, lower back, and neck.
Scoliosis
is a side-to-side curve of the spine. This condition becomes apparent during
adolescence. It is unknown why Scoliosis affects more girls than boys.
Talipes
equinovarus, often called clubfoot is an abnormal condition of the foot,
usually present at birth. The foot is bent downward and inward so that the
person can walk only on the toes and on the outside of the foot. Sometimes the
foot is bent upward and outward so that the person can use only the heel for
walking.
Tendinitis
is a disorder involving stiffness or pain in the muscles or joints. It is often
called rheumatism.
Kyphosis,
also called hunchback is a forward bending of the spine. Kyphosis is caused by
any condition that deforms the bones of the upper part of the spine so that the
person is bent forward. Diseases that cause kyphosis include tuberculosis,
syphilis, and rheumatoid arthritis.
Poliomyelitis,
also called polio, is a serious infection caused by a virus. A polio virus may
attack the nerve cells of the brain and spinal cord, causing paralysis. Some
patients show only mild symptoms, such as fever, headache, sore throat, and
vomiting. Symptoms may disappear after about a day.
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