Conversation: The conversation between human and AI assistant.
[|Human|] Hi, my son is 7 and keeps getting nasal polyps in his left nostral he has had two operations to remove in the space of a year but they keep coming back. He has had cystic fybrosis tests which were negative and has had allergy tests which were all ok too? What could be causing this?
[|AI|]  Thanks for following up. You should understand, that nasal polyps grow only in inflamed tissue of the nasal mucosa. The mucosa is wet. During an infection or allergic reaction, the nasal mucosa becomes loose, swollen and red, and produce fluid that Chat Doctor.  With continued irritation, this mucosa may form a polyp. Although some people can develop polyps with no previous nasal problems, because they have hereditary tendency for develop polyps. Often there is a trigger for developing polyps. These triggers include:-chronic sinusitis-bronchial asthma-allergic rhinitis-cystic fibrosis-Churg-Strauss syn