Hello,, madam it seems like you have Deviated nasal septum (septum). A deviated septum occurs when the thin wall (nasal septum) between your nostrils is displaced to one side. In many people, the nasal septum is displaced — or deviated — making one nasal passage smaller.When a deviated septum is severe, it can block one side of your nose and reduce airflow, causing difficulty breathing, recurrent sinus infection, frequent rhinitis (runny nose, sneezing) The additional exposure of a deviated septum to the drying effect of airflow through the nose may sometimes contribute to crusting or bleeding in certain individuals. For treatment antihistaminics are given first to avoid allergy,if not controlled, To correct a deviated septum, surgery(septoplasty) is better and permanent choice.