Is vomiting a common symptom of chickenpox? We have had our 2yr old grandson since Wednesday night, and he has been vomiting everyday or if not in the daytime, at night. He also had diarrhea. We took him to the doctor on Thursday, and he said it looked like he had chickenpox or maybe scabies, but leaned more towards chickenpox. Today I have given him 50mls of Pedialyte. Doctor said to keep him on light food, which we have been doing, but he has lost 2kgs since we saw the doctor. Can you advise me as to what I should be feeding him (if anything). He has a happy disposition considering what he s going through.