You have listed and excluded most of the likely causes that would make a previously happy 2 year old suddenly become miserable. She seems to have a mild viral infection probably a laryngitis as she has a barking cough at night.She may have some flu symptoms as well at this time such as muscle pains and possibly a headache. Give her Panado or Calpol for pain and fever and see that she drinks well. If she does not improve after 48 hours she should be seen by her doctor.
The information provided does not constitute a diagnosis of your condition. You should consult a medical practitioner or other appropriate health care professional for a physical exmanication, diagnosis and formal
advice. Health24 and the expert accept no responsibility or liability for any damage or personal harm you may suffer resulting from making use of this content.