<s>[INST] Hi a friend of mine has been having fever on and off for the last 4 days, he has rashes in most parts of his body (then on occasion it disappears but right now when he started having fever it stayed red and itchy), he's having head, body and joint aches and a heavy feeling in his eyes. Lab result was low wbc and a trace of blood in his urine. What could this be? [/INST] Hi. Fever with rash and joint pain is seen in many conditions.  Most commonly seen in viral fever like dengue or other viral fever. You have low wbc count which also favour that. Go to the doctor and take treatment.  And regularly measure platelet count. You may have low platelet.  If it is severely depleted then it may leads to life threatening bleeding.  So keep close watch on that. And take plenty of fluid orally. It will go away in few days. </s>