In addition, colour vision may become faded or washed out.

Dr O'Neill said: "In boxing you aim to punch your opponent's head.

Other causes of back pain include arthritis, fractures and
infections.

If surgery fails, the child's only other option is a liver transplant,
which is a traumatic operation with varying degrees of success.

It causes severe diarrhoea and vomiting, and patients, particularly
children and the elderly, are vulnerable to dangerous dehydration as a
result. The disease can be triggered by a stroke or other event that
leads to brain damage.

The drugs used to treat cancer are among the most powerful, and most
toxic, chemicals used in medicine.

Since then it has spread westwards through Asia, the Middle East, Europe
and Africa. The condition is easy to trivialise. The top layer may later
peel off but the skin beneath is healthy. If the virus gained the
ability to pass easily between humans the results could be catastrophic.
Despite this, many people are still unaware of this lung disease.

As the lungs become more damaged, too little oxygen gets into the
bloodstream and this lead to other health problems such as heart
failure.

Some babies who have a cleft lip may also have a cleft in the gum.

Some babies with unexplained ALTEs may have repeat attacks. Treatments
only move into a Phase III trial if phases I and II have been
successful.

Despite this, they are contributing to the problem because the bacteria
remain in their faeces for up to a fortnight.

The major feature is the spine.

The bacterium is part of the flora of brackish water and estuaries - it
is when this water gets into the drinking supply that an outbreak can
start. Birds excrete the virus in their faeces, which dry and become
pulverised, and are then inhaled. After cooling, remove clothing from
the burnt area, but do not try to pull off clothing that has stuck to
the skin as this may cause more damage. Vasoplasm usually occurs a week
or two after post-haemorrhage surgery. Symptoms are similar to other
types of flu - fever, malaise, sore throats and coughs. Many health
professionals are not aware that BDD is a psychiatric disorder that can
be treated.

If you are concerned about your health, you should consult a doctor.

If the oxygen supply to the vital organs is seriously diminished, life
will be put at risk. A report by the House of Lords Science and
Technology Committee recommended the use of cannabis for medicinal
purposes.

The growth of the tumour can result in pressure building up inside the
skull - causing nausea, drowsiness and vision problems, as well as
headaches and mental problems. How can attacks be prevented? These can
occur hours or days before audible wheezing begins.