Hi,
I had terrible itching and burning whilst on Cymbalta, it turned out to be an allergy. this came on a few weeks after my dose was increased, and lasted 2 months until they knew what was causing it. was hell- I had to come off it very quickly, and these sensations did intensify for a couple of weeks too unfortunately.
your doctor's advice as to taking 30mg every other day was not good, as alternate days pushes you in and out of withdrawal and confuses the brain even more as it tries to adjust to the lower dose.
it is good you are on 20mg every day now, but I suggest you ask your doctor for an allergy blood test, and also some other antihistamine. if one doesn't work, there are others to try, and you can't go on like this (trust me I know, it sends you out of your mind!)
I use Fexofenadine (non sedating) at night, and during the worst of it, I had to use Clarityn (sedating) as well. insist on your doctor giving you things that work, if they don't work, he/she MUST find you an alternative to ease this (specially when it interferes with sleep).
forget wearing a bra, and if possible wear an oversized t shirt in a very soft material, that touches your breasts as little as possible/ go naked! I had to do this in minus conditions and I will never forget the near hypothermia lol.
once you have ruled out an allergy, you can put this down to withdrawal. to get through this- and you can, with the assistance of the right meds- then it will gradually ease. sensations will gradually abate, but gradually. takes a few days for the antihistamine to build up enough to help, then reaches its peak. I still take half an antihistamine at night, and I've been off Cymbalta 7 weeks tomorrow.
do not use bubble baths, or anything perfumed. plain soap and water in a tepid bath, you'll be able to increase the bath temp once it settles a bit:) if your nipples are burning and sore, a touch of aloe vera gel on them helps too. talc, liberally as well. this stops clothing rubbing so much.
I feel for you more than I can say, it is horrible x