Sinus Infections More Condition_symptoms Why Is It That Sinus Infections Can Be So Hard To Get Rid Of Sometimes?

Why is it that sinus infections can be so hard to get rid of sometimes? - sinus infections more condition_symptoms

Is it because of location or infection? In other words, the breasts will easily conceal the body and immune system evasion measures? I have allergies and the time that the doctor ordered, I'm good for most. But when I have my allergies under control I get an infection easier. I still have a sinus infection in a long, long time. It remains to understand why so many people suffer and why these types of infections are persistent.