Dear patient, Your breathing problem is because of the deviated nasal septum which means the nasal bone instead of being straight is either curved like C - shaped or S - shaped which will be associated with turbine hypertrophy ( means swelling of the muscles within the nose) this prevents the air entry into the nose leading to alternative open mouth breathing and a feeling of nasal blockade and shortness of breath also with mild swelling of the lips. The severity of the problem depends on the degree of nasal bone deviation.