To determine the presence of worms in the nose, there are 3 main aspects: 1. Symptoms. If the worms are in the nasal cavity, there may be a feeling of nasal blockage and poor ventilation, while there may be a feeling of crawling and movement inside the nasal cavity. When the bugs are corrupted in the nasal cavity, there may be a foul odor in the nasal cavity, and there may be blood in the pus and so on. 2, physical examination. Clinical endoscopy can be used to check the total nasal passages, lower nasal passages, middle nasal passages, upper nasal passages, olfactory fissures and other parts of the nasal passages, to see if there is the presence of worms, these checks are more intuitive. 3, if through the above 2 methods or no worms, but the patient still feels uncomfortable inside the nose, clinically, you can also do a CT examination of the nose, to see the sinus cavities, including maxillary sinuses, whether there are worms, the possibility is relatively small, but through the examination, you can also do a nose CT examination, to see if there are worms inside the sinus cavities, including maxillary sinuses. The possibility is relatively small, but through the examination can be a precautionary measure.