Nostril entrance long a pimple, the main consideration and rhinitis, nasal polyps, folliculitis and other diseases related. 1. Rhinitis: such as acute rhinitis, hypertrophic rhinitis, etc., under the stimulation of inflammation, it can lead to local edema, hyperplasia of the inferior turbinate hypertrophy, which can be manifested as a long pimple at the entrance of the nostril. 2. Nasal polyps: patients may have nasal congestion, runny nose and other symptoms, when nasal polyps grow to the front nostril, can also be found at the entrance of the nostrils of the affected area of the polypoid pimples. 3. Folliculitis: it can lead to the appearance of pimples and pustules in the affected area, accompanied by redness, swelling, pain and other symptoms. This manifestation may also be caused by other diseases such as nasal vestibular cysts, sebaceous cysts, etc. It is recommended that patients actively seek medical examination in a timely manner to confirm the diagnosis of the condition, and then under the guidance of the doctor for treatment.