From Brianne's blog -

Brianne's health has deteriorated rapidly over the past 36 hours and she is very weak, tired, sore, and ill. She started developing some sores on her skin on Tuesday and Wednesday and over the past 2 days, they've appeared over all of her body. The sores are due to her weakened immune system and come from a blood infection. The Doctor said the sores should continue to multiply and probably won't go away. The sores look kind of like chicken pox, but they don't itch and are just painful. The sores are not contagious and come from a fungus that every person has, that a normal person's immune system takes care of. We just want everyone to be aware of her appearance, so as not to be shocked or scared.