<s>[INST] My 8 year daugter has been diagnosed wtih mono 3 days ago she has been real sick with fever, sort throat, headache and cough. Her spleen is sore to the touch. She has been drinking fluids but not eating much. She is now throwing up yellow stuff like mucus. What should I do? [/INST] Hello and welcome to Chat Doctor There is no specific treatment of this viral illness called infectious mononucleosis. It will regress after lasting for a seven to fourteen days.  Treatment can be done symptomatically. Give plenty of rest. For vomiting give syrup domeperidone (dome) followed by sip ORS (oral rely Chat Doctor. For pain and fever syrup paracetamol can be given.  In case of persistent vomiting despite anti-emetic (medicine for vomiting),I would advise taking her to ER for IV HY </s>