Sinus infections are common this time of year, and doctors often prescribe antibiotics to help adults get better.

But in most cases, antibiotics are not necessary.

Research was done with adults suffering from a sinus infection.  Half were given antibiotics, while the other patients took a placebo, or sugar pill.

After 10 days of treatment, 80% of the patients in both groups said they felt better.  

Though most people will get better without them, if after 7 days you still feel bad, have a fever of 101 or higher, or have recurrent infections, it may be time for your doctor to prescribe an antibiotic.