THE controversial measles, mumps and rubella vaccine can sometimes cause a
rash-like reaction in children, a study in Britain has confirmed. Although this
side effect has been known for over 10 years, the latest work gives a more
accurate assessment of the risk.
The rash is the result of a bleeding disorder called idiopathic
thrombo-cytopenic purpura, or ITP, which is caused by a shortage of the
platelets involved in clotting. This can cause mild bleeding beneath the
skin.
Most children make a complete recovery within a couple of weeks. Fewer than 5
per cent of patients develop chronic problems that…
