Many are clearly related to a head injury or a viral illness.
"Someone comes to me with a viral illness, there is a battery of tests we can run," he said.
Sometimes it is difficult to tell whether you have influenza or some other viral illness.
Isolation is most commonly used when a patient has a viral illness.
Even a healthy pregnant woman could get a viral illness, he reasoned.
She pulled out before the tournament began with a viral illness.
Symptoms usually develop 3 to 7 days after the viral illness starts.
Maybe a few kids had a viral illness of some sort, but with most, it was sympathetic.
You become suddenly quite weak following a typical viral illness.
Did it start following a typical viral illness, such as a cold?
