Are Sinus Infections Catchy Why Do I Keep On Getting Sinus Infections So Frequently?

Why do I keep on getting sinus infections so frequently? - are sinus infections catchy

I get 4-7 sinus infections each year, which is about eight years. I take Augmentin for 10 days and then back after about 6 weeks. I saw an ENT and he only prescribed Augmentin as well. I am allergic to dust mites, take me to build my immunity, but my symptoms are not bad in general, require regular medication. I'm sitting here with a bad headache and still need help, please.