<s>[INST] DEAR DOCTOR, my dad aged 63 is suffering from liver cirrohsis.. he is a born vegetarian and non-alcoholic.. but he has diabetes... he is bbeing treated for it... but he suffers from fever and chill especially if he travels and drives car... wat may be the cause for fever?? waiting for your reply... thank u... [/INST] Hi welcome to the health care magic Secondary infection as a result of diabetes here can lead fever.. By travelling he might suffers from viral cold and that can also lead fever with chills Your father's work up done with... -CBC along with platelet count and DC-Auscultation -Physical examination and detail drug history -Peripheral smear examination esp for malaria parasitesIf specific cause revealed than treatment done for that If fever not resolving and keep on increasing than blood culture like investigation might done until than symptomatic management done,  and for fever paracetamol given Advise : Consult physician for examination... </s>