Conversation: The conversation between human and AI assistant.
[|Human|] hi my dad has tempreature and rigors he has been in hospital for 3 weeks on antibiotics but they cannot find the cause he can go 2 days withoiut tempreature and rigor then it suddenly comes on he has been in icu but on ward at the moment he has another pet scan tommorow any info please
[|AI|]  HiT hank you for asking ChatDoctorI have gone through your query. Prolonged fever and rigors can be due to various reasons. As there is non fever intervals for 2 days possibility of malaria and typhoid should be ruled out. Typhoid serological test should be done. Temperature should be recorded graphically 4 hourly which gives a pattern of type of fever. Peripheral smear for malaria should be done when having high temperature. This will help to rule out malaria. Possibility of abscess in various portions of body should be ruled out also by ultrasounds or CT scans if necessary. By finding out the exact reason it will be easy to manage it. Hope this may help you. Let me know if anything is not clear. Thanks.