I had allergic reaction to Tamoxifen, sore mouth and my lady bits very sore and swollen, constant tummy problems.
It was same rare allergic reaction you mention.
I had it with anti epileptic drugs too.
But if its allergy its gets worse and worse.
I have started Letrozole and note dry mouth now.
It is hard to know whats hormone related or not.
just to tell you there is a lip balm called carmex, my daughter uses it all the time
hope this helps. Try the tub not the tube
hugs janet xxx
I had a problem similiar to yours starting about 6 months after starting Letrozole and I also had a dry mouth.
After many visits to my GP, chats with my Onc(didn't really want to know) I was referred to a Oral clinic at my local hospital and was diagnosed with Burning Mouth Syndrome. If you look it up on the net it can be caused by a lack of Oestrogen and 1 in 3 menopausal women are diagnosed with it. There is no cure, just a treatment of symptons. I have now finished Letrozole after 5 years and it is slowly getting better.
Hopefully your problem isn't this and your lips improve soon.