I am not real sure how this is going to go together. It is something that I have
been putting off for many, many months for several reasons. First, I am
not a medical specialist and I do not want to misinform or misdirect
anyone. Secondly, this has not been a very pretty part of my life and I
am somewhat hesitant to relive it. But I do suffer from a very life-altering
disease and because it is very rare I found it difficult to find
information. So here is my somewhat feeble attempt at explaining what has
happened to me.
Arnold-Chiari Malformation (ACM), ) is a rare congenital anomaly in
which two parts of the brain, the brainstem and the cerebellum, are
longer than normal and protrude down into the spinal canal. Chiari
malformation may be associated with many other anomalies including
myelomeningocele, syringomyelia, and spina bifida. Hydrocephalus
(increased intracranial pressure) may also occur. In most cases,
symptoms begin during infancy, however onset of symptoms may be
delayed until adolescence or adulthood. Symptoms usually include
vomiting, muscle weakness in the head and face, difficulty swallowing,
and varying degrees of mental impairment. Paralysis of the arms and
legs may also occur.
Untreated, the chronic crowding of the brainstem and spinal cord can
lead to very serious consequences including paralysis. In addition they
can lead to the development of syrinxes which may further injure the
patients spinal cord and function.
Syringomyelia (SM) is a disorder in which a cyst forms within the
spinal cord. This cyst, called a syrinx, expands and elongates over
time, destroying the center of the cord. Since the spinal cord connects
the brain to the nerves in the extremities, this damage may result in
pain, weakness, and stiffness in the back, shoulders, arms or legs.
Other symptoms may include headaches and loss of the ability to feel
extremes of hot or cold, especially in the hands and disruption in body
temperature. SM may also adversely affect sweating, sexual function
and bladder and bowel control.
What causes Syringomyelia?
In either case, the condition may lie dormant and undetected for months or years until a symptom or variety of symptoms become bothersome enough to warrant medical attention. Many people with SM are not diagnosed until mid-life.
A number of medical conditions can cause an obstruction in the normal flow of cerebrospinal fluid (CSF), redirecting it to the spinal cord itself. This results in the formation of a syrinx (cyst that fills with CSF). Pressure differences along the spine cause the fluid to move within the cyst. It is believed that this continual movement of fluid results in cyst growth and further damage to the spinal cord and connecting nerves.