
Sore Throat, No Appetite, Taken Antibiotics. Is It Giardia?

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Your son has all the likelihood of having a viral syndrome and viruses hardly respond to antibiotics. He should receive decongestants like Sinarest/Wikoryl 6hourly for sore throat.
With history of headache, fever and nausea/vomitting there is possibility of serious brain infection and your son should have a lumbar puncture- CSF examination and an MRI brain done along with CSF and blood cultures.
Giardia can not cause such acute illness and is not a cause for his problem.
He may need antivirals to be started if his MRI Brain shows viral infections.
Aggressive control of temperature is worthwhile- with acetaminophen and tepid sponging. Keep the child well hydrated and ensure he takes meals regularly.
You can communicate with your doctor about my referal, he would be happy.
I hope this advise would be helpful for you.

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