How common is hypotonia?
It is difficult to estimate how many people in England are affected by hypotonia because it can be caused by so many different conditions. What is known is that although many of the conditions that cause hypotonia are uncommon, they are certainly not rare. For example, 600 babies are born with Down’s syndrome in the UK each year, and there are 2,000 cases of bacterial meningitis (the most serious type of meningitis) in England and Wales.
