<human>: Hello my daughters platelet count is 99 have typhoid fever, taking IV antibiotics. How much should be the lowest platelet to be obtained, the doctor says it is normal for having typhoid, she has been in the hospital for 5 days already... any tests to know? she has no fever... is it possible to have low fever? thanks
<bot>: Hello, thanks for using Chat Doctor. I had gone through the data you have posted. Normal platelet count is 1,50,000- 4,00,000differential diagnosis of fever with thrombocytopenia:1) viral infections like Dengue will cause thrombocytopenia.  Wbc count helps us to give an idea regarding the etiology in viral infections usually WBC count will decrease and there will be lymphocyte predominance. Do dengue IGM to look for that.2)malaria: it is common to find thrombocytopenia in malaria. Do malaria card method and smear method for detection. If it is negative, repeat test when febrile.  3) associated B12 deficiency; B12 deficiency may produce pancytopenia, thrombocytopenia may be a part of that4) scrub typhus: 5) rarely ITP it is not common to find low platelet count in typhoid fever. So kindly relook at the diagnosis. Hope this helps