What is arthritis?
Arthritis is not a single disorder but
rather the name for joint disease from a number of causes. Arthritic disease causes
painful inflammation of one or several joints, with the inflammation destroying
the cartilage in the joints.
What are the different types of arthritis?
Also known as degenerative joint disease or
osteoarthrosis, osteoarthritis is the most common arthritic disease. The
majority of Irish people over the age of 55 have evidence of osteoarthritis at
some joint in their body.
Osteoarthritis develops when cartilage (a
slippery tissue that coats the ends of the bones) in a joint deteriorates. As
the disease progresses, the cartilage loses elasticity and becomes increasingly
prone to damage due to wear and tear, leaving the ends of the bone within the
joint unprotected. Unlike some other types of arthritis, such as rheumatoid
arthritis, osteoarthritis does not spread through the entire body but instead
concentrates in one or several joints, usually the fingers, feet, knees, hips
Although it is most common in the elderly,
it is not just a result of the ageing process, as osteoarthritic cartilage is
chemically different from normal aged cartilage. Genetic factors, muscle
weakness and obesity may all contribute to the development of the disease.
Rheumatoid arthritis is an autoimmune
disease that causes chronic inflammation of the joints. There have been
suggestions that the disease may be caused by an infection, but this has never
been proved. Genetic, as well as environmental factors may be involved.
Although it usually begins between the ages of 30 and 40 it can occur in older
people for the first time. It occurs more commonly in women than in men.
If you have signs of inflammatory arthritis
in your joints, but blood tests for rheumatoid arthritis are negative, you may
be diagnosed with ‘seronegative arthritis’. Seronegative arthritis can be
associated with disorders such as psoriasis or Crohn’s disease.
Also known as reactive, septic or pyogenic
arthritis, this type of arthritis is caused by bacteria invading a joint from
an infected wound near the joint or from an infection in the bloodstream.
This is another form of inflammatory
arthritis, which affects the pelvic joints and the spine. It is commoner in men
and women appear to get a less aggressive form of this condition.
The arthritis associated with this disorder
results from crystals of uric acid being deposited in joints, causing
inflammation. Gout usually affects one joint at a time and the big toe is the
most commonly affected joint.
What are the symptoms of arthritis?
- Pain in the joints, which may be
accompanied by feelings of weakness and fatigue. The joints most likely to be
affected will vary depending on the type of arthritis present.
- The joints usually swell and become red,
stiff and sore.
- Discomfort and stiffness are usually worse
early in the day and are eased by moving around.
Who is affected by arthritis?
One in every six people in Ireland are
affected by arthritis. All age groups can develop the disease, including children.
It is more common in women than men.
How is arthritis diagnosed?
Your doctor will make the diagnosis based
on your symptoms and a physical examination. Sometimes, your GP may be able to
make a diagnosis right away, but in other cases you may be referred to a
specialist at a hospital. X-rays may be used to assess the extent of joint
damage. Blood tests (such as a full blood count, ESR or rheumatoid factor) are
helpful in distinguishing the different types of arthritis.
How is arthritis treated?
Arthritis is an unpredictable disease and
treatment can be difficult. The approach and success will vary according to the
type of arthritis being treated. There is no known cure for arthritis, so
treatment is aimed at reducing joint pain and inflammation, improving joint
function and preventing progression of the disease. This is achieved through a combination
of lifestyle factors and drug therapy.
- Exercise — a graduated exercise programme
that is within your capacity is essential to maintain the function in your
joints. Walking and swimming are particularly suitable forms of exercise.
- Diet — if overweight, it is important to
lose weight; carrying extra weight puts a lot of strain on the joints. People
who suffer from gout will be advised about avoiding certain foods and reducing
their alcohol intake.
- Heat — a hot water bottle, a warm bath or
an electric blanket can be very helpful in reducing stiffness and easing pain.
- Physiotherapy — can be very useful in
maintaining joint mobility and function.
- Occupational therapy — advice on aids to
use in the home and more efficient ways to carry out normal daily activities to
protect the joints.
The type of medication used will depend on
the type of arthritis you have. Osteoarthritis is often treated with simple
painkillers, such as paracetamol or paracetamol combined with codeine.
Anti-inflammatory drugs such as aspirin or ibuprofen are best reserved to treat
acute flare-ups, as long-term, continuous use of these drugs may cause serious
side effects such as bleeding from the stomach or bowel.
In rheumatoid arthritis simple painkillers
and anti-inflammatory drugs are also widely used. In recent years, a new
generation of anti-inflammatory drugs called Cox-2 inhibitors were introduced,
which promised to give less side effects than those seen with the older
anti-inflammatory drugs. However, the Cox-2 inhibitors have since been
associated with heart problems, restricting their use in certain ‘at risk’
In addition, there are a number of disease-modifying
drugs available, which reduce pain, swelling and stiffness in people with
rheumatoid arthritis. A group of drugs called anti-TNF drugs, which act to
reduce inflammation, are sometimes used in patients with rheumatoid arthritis who
have not responded to other medications.
Steroids can also sometimes be prescribed,
but doctors normally try to avoid them because of the side-effects they can
produce with long-term use.
Joint injections and joint replacements are
other treatment options.
What can I do?
- Visit your doctor regularly so that your
arthritis can be monitored and medication changed when necessary.
- Ask a physiotherapist for advice on an
exercise programme that is suitable for you.
- Watch your weight, particularly if you have
arthritis in weight-bearing joints.
What is the outlook?
There are many types and degrees of
severity in arthritis, but it is not usually a crippling disease, particularly
if diagnosed and treated early. Recent advances in drug therapy will also help