Hi, its nice that you are going to stop the chewing tobacco habit. There can be multiple causes of
nasal bleeding and crusting with scab formation by nose picking is the common.
Hypertension is the most common cause in the elderly. Cancer can be cause of nasal bleeding but needs to be evaluated and for that you need to see an ENT. So, do not worry, just see an ENT and get yourself examined in case you do not fit into the above two described categories. Regards