There are many medications, both over the counter and prescription, that can help relieve nasal congestion in your sinuses. Flonase and Nasacort are nasal steroid sprays that are available over-the-counter. To use, administer one spray per nostril, once or twice daily. This is especially helpful if you have allergies. You may also try Zyrtec, which is a non-drowsy antihistamine, which can reduce sinus congestion. Take 10 mg once a day. Also try Claritin, another non-drowsy antihistamine that may work well for you. Take 10 mg once a day. Oral decongestants that include pseudoephedrine may also be helpful.  If the over the counter doses don't work for you, talk to your doctor about stronger version of these medications or other, prescription only decongestants that may work better for your case.  OTC pain medications for the pain associated with sinus congestion, such as acetaminophen and ibuprofen, may also help.  Nasal decongestants, such as Afrin, can quickly reduce sinus congestion, but should only be used for three days. If you use them longer, you may get rebound symptoms.  Pregnant women or people with medical problems such as heart disease, diabetes, high blood pressure, or thyroid disease should not use these medications without talking to their doctor. And talk to your child's doctor before giving them to children. If you have severe chronic allergies that cause your sinus issues, consider immunotherapy to eliminate your sinus congestion. Immunotherapy is the process by which you are administered small doses of what you are allergic to, such as pollen, mold, or pet dander, either by injections or under the tongue. The first step is to get tested by an allergist, who will figure out exactly what you are allergic to. Once your doctor has confirmed what you are allergic to, he or she will begin to administer the allergen as injections or under your tongue. The doctor gives you doses of the allergen with the idea that your body will learn to adapt to the allergen, no longer see it as an invader, and no...

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Write a summary of the previous text in Vietnamese:
Dùng thuốc. Tham khảo về liệu pháp miễn dịch. Tìm biện pháp chăm sóc y tế khẩn cấp.