If nosebleed occurs during negative pressure treatment, it is suggested to stop taking medicine for 3 days first, then go back to the hospital for review, and then decide the next treatment plan. If it is a cough caused by sinusitis, it should be cured, rather than taking cough medicine.

(Dr. Wang Jie from Guangzhou Children's Hospital solemnly reminded me that I couldn't fully understand the illness because I couldn't meet the patients face to face. The above suggestions are for reference only. Please go to the hospital for specific diagnosis and treatment under the guidance of a doctor! )