unexplained itching

I have developed itching on the palms of my hands, finger, arms,  and tops of my feet.  I haven't changed anything, but can't figure out what's causing this; there's no rash or bumps, just the redness that comes from my scratching.  Anybody know what it is or what to do about it?

[Deeds]

Do you use Splenda? Do you take any medications?

[English teacher]

No, I do not use Splenda.  I take several medications, but I haven't changed any of them.

[Deeds]

you may have not changed any meds but, the pharmacutical company could have changed "fillers" in them... that is what happened to me...they changed one of my meds and now I cannot take it - I itch all over when i do!

[English teacher]

Thanks, I'll check that out!