Hi, Thànks for the query. I understand your concern. Non healing scab in nostril can be following drness of nostri ( long use of nasal drops., allergy,chronic sinusitis , herpese or hiv in few cases. Tryto keep the scab moistened by application of antibiotic ointment with local anestheic ointment... this would allow easy removal of scab.Continue with same management foe few days .. so that the wound would heal If it does not consult an ENT doctor for needful investigations to find the cause.followed by oral specific treatment. Thanks.