Lamellar ichthyosis is an autosomal recessive
disorder that is apparent at birth and is present throughout life.
The newborn is born encased in a collodion membrane that sheds
within 10-14 days. The shedding of the membrane reveals generalized
scaling with variable redness of the skin. The scaling may be fine
or platelike, resembling fish skin. Although the disorder is not
life threatening, it is quite disfiguring and causes considerable
psychological stress to affected patients. (cite)
The ichthyoses are a family of skin diseases; the
characteristic that they each share is that they cause the skin to
build up and scale (some medical journals and dictionaries still
refer to ichthyosis as “fish skin disease”). The degree of scaling
can vary; some people who have ichthyosis just have dry skin. They
can pretty easily care for their skin with drugstore lotions, and
unless they told you they had trouble with dry skin, you probably
would never know they had it. As you might guess, this type of
ichthyosis is fairly common. However, most forms of Ichthyosis, such
as Lamellar Ichthyosis are much more severe (also very rare). The
scaling can be very heavy — and it is noticeably visible to someone
on the street — that something is wrong with their skin. However,
it’s much more than a cosmetic problem for the person who has the
disease — the scaling can be very painful, as it can restrict the
body’s range of movement, pull so tightly around the face that the
eyelids turn outward, cause deep cracks or fissures at the joints,
adversely affect hearing, and more. People who have ichthyosis will
probably try their best to hide these problems from you. They don’t
want you to pity them, and they don’t want their ichthyosis to stop
them from doing everything in life that everyone else can do.
However, living with ichthyosis can be very tough.
Dermatologists have recognized more than 25 types
of ichthyosis however, there are just a handful of main types:
lamellar ichthyosis, congenital ichthyosiform erythroderma (CIE),
epidermolytic hyperkeratosis (EH or EHK), x-linked ichthyosis and
ichthyosis vulgaris. With the exception of ichthyosis vulgaris,
ichthyosis is a very rare disease.
(cite)
What does ichthyosis look like?
The following pictures are posted on
www.ichthyosis.com
See the pictures
2 day old baby
3 months old baby
3 months and 2 days old
3 months and 5 days old
4 months and 2 weeks old
What causes ichthyosis?
Lamellar
Ichthyosis is caused by a genetic defect (either by spontaneous
mutation or inheritance) of the TGM1 gene. The symptoms may or may
not be apparent at birth, but the genetic defect was present at
conception. Ichthyosis can not be “caught” nor can it passed on
through contact. You were just born with it.
What does it do to the skin?
Your skin is alive; it is your body’s largest
organ! With “normal” skin, the skin is constantly renewing itself,
dying, and shedding. (The average skin cell has a lifespan of 14
days.) Most of the time you probably don’t even notice that this is
going on. When your skin sheds, it’s practically invisible (unless
you’re looking at it under a microscope!) because it’s shedding in
pieces that are so small. With ichthyosis, the skin doesn’t follow
the life cycle that it’s supposed to, and builds up. In CIE and EH,
the cells reproduce too fast, faster than they can shed, and build
up. In lamellar ichthyosis, x-linked ichthyosis and ichthyosis
vulgaris, the skin cells reproduce at a normal rate, but they don’t
shed as quickly as they should, and again produce a build-up.
(cite)
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What are the incidence rates?
|
Very
little reliable information is available on the
prevalence, or incidence, of the ichthyoses. According
to the latest information published by the United States
Census Bureau, there were 4,047,642 live births from
July 1, 2001 – July 1, 2002. The Census Bureau reports
that the population in the United States, as of July 1,
2002, is 288,368,698 people. Based on this information,
the following table indicates the latest approximate
statistics of ichthyosis patients in the US:
|
|
Type |
Prevalence |
Affected Individuals |
Yearly Births |
|
CIE |
1:100,000 |
2,880 |
40 |
|
Lamellar |
1:200,000 |
1,441 |
20 |
|
EHK |
1:100,000 |
2,880 |
40 |
|
Recessive X-Linked |
1:9,500 |
30,354 |
426 |
|
Darier Disease |
1:55,000 |
5,243 |
74 |
|
Vulgaris |
1:5,000 |
57,573 |
809 |
Source:
Foundation For Ichthyosis and Related Skin Types
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What's it like to have ichthyosis?
One of the things your skin normally does for you is regulate
your internal temperature. People with ichthyosis are often more
sensitive to temperature changes, both hot and cold. Overheating
poses the biggest problem. Hot weather, vigorous physical exercise,
anything that would normally cause you to sweat and be hot, poses a
problem for people with ichthyosis (many of whom can't perspire, or
only sweat a small bit in certain places – not enough to naturally
cool themselves down). So people with ichthyosis go to great lengths
to stay active and avoid heat exhaustion (or worse!).
There currently is no cure for ichthyosis; only
treatments. Caring for ichthyosis is very labor-intensive. It means
spending lots of hours every week bathing, scrubbing the skin in an
effort to shed some of the scales, putting on creams to help
moisturize and exfoliate; it's a never-ending battle where you can
never quite seem to get the upper hand. Caring for ichthyosis is as
much about looking good as feeling good. For people with severe
forms of ichthyosis, the goal (which is difficult to achieve), is
two-fold: make the skin look “normal” enough that people on the
street don't stare, call you names, or always ask what's wrong with
you, and secondly, to make the skin soft so that it isn't painful to
move, won't impair your hearing or affect your eyesight.
In addition to the numerous medical complications like
dehydration, infections, limited movement, impaired eyesight or
hearing, chronic blistering, and overheating, patients with
ichthyosis suffer psychological issues as well. Patients are often
ostracized due to their visibly chronic shedding skin, which can
lead to isolation, low self-esteem, and depression. For a family, a
child diagnosed with ichthyosis can be a devastating event, as they
see for the first time pictures of children affected with severe
forms of this disease. Words can not express the hardships that kids
with this disease must endure. (cite)
If you would like more information about what it is like to have
Ichthyosis, I encourage you read to read two very
inspirational stories that we found comforting when our.child was
born: One from a very brave child with Ichthyosis (Matt’s
Message) and one from his mother (Matt’s
Mom), who explains what it like to have a child with Ichthyosis.