There can be no disputing the fact that the number of people exhibiting the symptoms of R.S.I. has recently reached epidemic proportions.
It is also true to say that the epidemic appears to have increased roughly in proportion to the rise in the use of word processors and desk-top computers. Public awareness has been fuelled by trade unions concerned for the well-being of their members since, in its extreme form, R.S.I. can mean its victims have to give up a particular line of work.
The condition features disabling hand and arm pain, stiffness and an inability to continue to perform a particular function, especially the use of a computer keyboard.