Dermatology and Hot tubs/spas.

I have been having a light red rash on the inside of arms and legs at
the extremities.  This has been a minor concern for several months. It
is extremely itchy and comes and goes with the use of the tub.  I
believe it to be associated with my hot tub/spa which I use Chlorine
regularly.  I use the tub once daily or every other day.  I suspect
this issue is bacterial related and had a doctor mention the term
?felicitus? which I?m not sure of the spelling.  I recently changed
the water, with no significant improvement. If I stay out of the tub
for a few days, the itching goes away. This is the best answer I got
from a doctor to correct the problem, which defeats the purpose of
having a tub.

Can someone identify this problem and suggest a solution either as an
additive to the spa or a topical application to the skin?

Rather than "felicitus," it may be that the doctor said
"folliculitis." This article may be helpful:

http://dermatology.about.com/od/infectionbacteria/a/htfolliculitis.htm