The pain on the inside of the nostrils of a 40-year-old woman can be considered to be caused by rhinitis and damage to the nasal mucosa. 1. Rhinitis: 40-year-old woman suffering from dry rhinitis or atrophic rhinitis, allergic rhinitis, patients with nasal secretions can not be easily discharged, all piled up in the nasal cavity, blowing the nose when the secretion off, causing nasal mucosa bleeding nostrils on the inside of the pain will be obvious. 2. Nasal mucous membrane damage: 40-year-old woman due to digging nostrils and other behaviors so that the nasal mucous membrane is damaged, resulting in bleeding and other symptoms, there will be pain on the inside of the nostrils. 40-year-old woman physiological reasons for endocrine disorders, there can be nasal mucosa dry, cracked performance, the phenomenon of pain in the nostrils. There may also be nasal mucosa atrophy caused. 40-year-old woman nostril pain, such as repeated or has been persisting, it is recommended to actively consult a doctor to clarify the diagnosis.