Is this something to worry about?

Thank you

It looks a bit like red spider mite. Look under the leaves but they are VERY small, they sometimes leave fine webs. A spray should see them off and then try to keep up the humidity to discourage more.

Marquerite, whilst I like the middle part of your response to Darryl's question I am not sure that a nurseryman would be so happy about an infected plant being taken into the nursery - it would be a bit like me going into the doctors waiting room and saying that I thought I had swine flu!
Certainly take a copy of the picture above but leave the plant at home.