<s>[INST] My little one has been absolutely fine, then all of a sudden yesterday after playing she just sat still and became very lithargic and was complaining that her head was sore and her stomache was sore and that she was tired and she wanted to sleep. She was so pale i got so worried, she was shivering and running high and low temperatures. The doctor said its tonsilitis but i dont know if thats correct because she was absolutely fine and when i look at her tonsils they look the same as they usually do. Please help [/INST] Hi.... by what you say I feel that it could be a viral illness which has started suddenly in her. Unless the child is having red rash all over the body or extremely dehydrated or has continuous vomiting or blood in the motion or decreased during output you need not worry about it. Usually viral illness will start suddenly and end suddenly in 2 or 3 days. Meanwhile if there is temperature above hundred degree fahrenheit please give her Paracetamol in the appropriate dose.Regards - Dr. Sumanth </s>