HCV
– Peripheral
Neuropathy (PN)
Written
by: Alan Franciscus, Editor-in-Chief Hepatitis C Support Project
Foreword
Neuropathy
is a medical term for any disease of the nerves. There are
four
major forms of neuropathy – polyneuropathy, autonomic neuropathy,
mononeuropathy
and the most common form, peripheral polyneuropathy
–
more commonly called peripheral neuropathy (PN). Peripheral neuropa
-
thy
damages the nerves in the legs and arms. Usually the first area that
PN
affects is the feet and legs before the hands and arms. This fact sheet
will
discuss the HCV-related form of peripheral neuropathy including the
cause,
symptoms, and treatments.
HCV
& PN
The
exact cause of HCV-related PN is not completely understood, but
there
is some speculation that it could be caused by HCV RNA (viral
load)
deposits in blood vessels that supply oxygen to the nerves,
HCV
infection of the nerves, an inflammation process in the nerves,
and/or
an HCV-related immune disorder. In the past it was believed
that
only people with cryoglobulinemia developed HCV-related PN
but
it has been proven that HCV-related PN can occur even in the
absence
of cryoglobulinemia. Studies have found that up to 15.3% of
the
HCV population has PN. If HCV is the cause of PN it would make
sense
to treat the cause.
Important
note:
Everyone
with hepatitis C should be evaluated and
receive HCV treatment. Current treatment is very expensive, and some
insurance companies and Medicaid/Medicare are restricting HCV
treatment to people with the most severe HCV disease. One of the
conditions that qualify people for HCV treatment are extrahepatic manifestations.
Discuss any symptoms with your medical provider and have
them recorded in your medical records. If you are not approved
for
the drugs to treat hepatitis C, you may qualify for free drugs or co-pay
assistance through a pharmaceutical patient
assistance program. More information is available
at the end of this fact sheet.
Causes
and Risk factors for PN include:
•
Infections
such as hepatitis C, Lyme disease,
shingles, Epstein-Barr, and HIV
•
The
most common cause of PN is diabetes –
it is estimated that 34% of the diabetic population
has PN. This compares to a
prevalence of 2.4 - 8% in the general population
•
Chronic
alcohol abuse
•
Vitamin
B deficiencies
•
Various
autoimmune diseases such as lupus
and
rheumatoid arthritis
•
Environmental
toxins
•
Medications,
such as HIV medications
Symptoms
The
most common symptoms of PN are HCV
therapy.
Self-Care
Tips:
A
healthy lifestyle can help manage PN and the symptoms
associated with it. These lifestyle modifications
include:
•
Exercise
–
can help to reduce some of the symptoms,
increase overall muscle strength,
increase
blood circulation, and prevent muscle
wasting or atrophy.
•
Nutrition
–
Eat a healthy diet that will improve
overall health and which may help with
the gastrointestinal symptoms people with
PN experience.
•
Smoking
–
Cigarette smoking constricts the
blood vessels that provide oxygen and
nutrients to peripheral nerves. Seek professional
services to stop smoking.
•
Drinking
–
Alcohol abuse is a leading cause
of PN. Avoid or greatly reduce alcohol
use.
•
Massage
–
especially to areas that are affected
by PN (hands/feet) will stimulate, relax
and may lessen some of the pain
•
Do
not put too much pressure on limbs-legs and
elbows such as crossing legs for a long period
of time.
Foot
Care
As
discussed earlier PN usually affects the feet and
legs first. Because NP can cause loss of sensation
to the lower extremities it is very important
that people with PN pay special attention
to their feet. The loss of sensation caused
by PN can lead to unrecognized cuts, blisters
and other damage to the feet. If a condition
or injury goes unchecked it could lead
to infections and ulcerations that may spread
to the bone. Severe bone infection can lead
to amputation of the infected bone. There are
many ways to take care of and protect your
feet.
The American Diabetes Association (ADA) recommendations
for foot care can be easily adapted
to everyone with PN:
•
Check
all the areas of the feet every single day.
Look for red spots, cuts, swelling and blisters.
If you can not see the bottom of your
feet, use a mirror or ask someone to inspect
them for you.
•
Be
more active (exercise and stretching).
•
Wash
your feet everyday. Dry them carefully, especially
between the toes.
•
Moisturize
your feet daily (but not between the
toes).
•
Never
go barefoot – always wear comfortable
shoes and socks. This is because
people with PN can cut or damage their
feet and may not even notice or feel the
pain.
•
Keep
toe nails trimmed so that the nails don’t
rub or cut nearby toes.
•
Be
careful not to expose your feet to hot and cold
temperatures.
•
Keep
the blood circulating throughout the feet.
The ADA recommends wiggling your ankles
up and down for 5 minutes – two or three
times a day. Don’t cross your legs for long
periods of time.
•
Stop
smoking cigarettes.
•
Check
with your medical provider about the need
for special shoes (orthotics).
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