The "allergic crease" (nasal crease) was first described in 1960 by Meyers as a transverse hyperpigmented or hypopigmented skin line, located approximately across the connection between the lower and middle thirds of the bridge of the nose. Although it may be a congenital, familial abnormality, most of the cases are found in patients with allergic rhinitis. The "allergic crease" together with the "allergic shiner" (darkening of the lower eyelid) and the "allergic salute" constitute the three facial hallmarks of these patients. Although it is a very prevalent condition, appearing in 7% of schoolchildren with nasal symptoms and signs of allergic rhinitis, the skin manifestations which accompany this condition have been only sparsely reported. you need to stop the habit of rubbing your nose... and apply Kojic cream twice a day for a month. Hope this is helpful.