Lexi was born as a normal, healthy child, but because doctors missed the fact at birth that she had low thyroid, they miscalculated what would happen when she got jaundiced. By not treating it quickly, she developed kernicterus, which the Charlotte Observer describes as following:
Lexi has kernicterus. It's a rare form of brain damage caused by newborn jaundice. It gave her cerebral palsy and dystonia, a movement disorder, and because of that she cannot walk and she cannot talk.
She has been receiving deep brain stimulation, a procedure that has worked well with patients who have dystonia or Parkinson's Disease. She is the first child ever with this condition who has been given this procedure.
These are tough times for the Haas family, which is a wonderful collection of very intelligent and capable children and some of the best parents I have known anywhere. My wife, Jo, has been with them during this time, and we miss her back on the homefront (which, thankfully, has not yet descended into chaos in her absence), and I wish my in-laws the very best.