Medicines may be needed when symptoms of sinusitis are severe or do not improve. The goals of treatment with medicine are to: Treat the infection, which is usually caused by bacteria if your symptoms have lasted more than 7 to 10 days. Relieve pressure and pain caused by poor sinus drainage.
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But, other than the risk of passing out, whatâs all this business about âkilling brain cells?â Well, studies of nitrous oxide users have found that it can possibly have two not-so-great effects: 1  Apoptosis, which is the death of brain cells, can occur, particularly in the regions responsible for learning and memory.