I had this a while back and it wiped me out for a few days. The Mother in law thought it was stress until I showed her the blisters that started forming on my hands and feet lol.I now have the babies hand foot and mouth while she is now fine.
I fully understand why she screamed anytime we tried to get her to eat or drink...
On a side note, one of our two and a half yar old twins is very vocal and speaking in full sentences, whereas the other one is noisy but not constructing sentences and says very simple words. His comprehension of instructions is excellent though and he has an obvious curiosity in how things work. Interesting to see the development difference even though we treat both the same.