The dry and painful crusts inside the nose may be caused by nasal vestibulitis and dry rhinitis. 1. Nasal vestibulitis: Nasal vestibular infection, nasal secretion stimulation may lead to inflammation of the nasal vestibule, thus causing pain, dryness, cracking, superficial erosion of the nasal vestibular area, with mucopurulent scabs on the nasal hairs. 2. Dry rhinitis: dry nasal mucosa, secretion reduction, but no nasal mucosa and turbinate atrophy as the characteristics of chronic rhinitis, nasal dryness, snot less, viscous and not easy to discharge, the formation of scabs or scabs, but also can appear nosebleeds and nasal itching. If the inside of the nose often appears dry and painful scabs, it is recommended that the hospital consultation, diagnosis and clear treatment.