Dry sinuses occur when the mucous membranes in your sinuses lack proper moisture. This can lead to dry nasal passages, discomfort, nosebleeds, and similar unpleasant symptoms.
In severe cases, untreated dry sinuses can become infected and require antibiotics. Fortunately, having dry sinuses is often a complaint that is usually easy to treat. With a combination of the proper home treatments and guidance from your doctor, your symptoms can be alleviated.
Colds are the primary cause of most sinus infections. A virus that causes colds can cause nasal tissue to dry up and obstruct the sinus drainage passages.
Antibiotics won’t help if a virus is the source of your sinus infection because they only destroy bacteria. It is likely that your symptoms will improve within a week or so. Decongestants can be helpful, but limit their use to no more than four or five days in order to prevent dependency.
The same precautions that help prevent colds and the flu also work well against these sinus infections. Stated differently, vaccinate against influenza,  wash your hands, and avoid close contact with sick people.<