Cauterizing is closing an open blood vessel by precise clinical burning of the area using a silver nitrate stick.

There are various ways nosebleeds can be treated with cautery. Your doctor would likely provide a local anesthetic around the nose and then use either a chemical application or direct heat in order to burn the vein/s responsible for the bleeding.

Doc knows best, but you can aslo try: sleep with a humidifier, wear a scarf, use a cotton swab to apply a thin layer of vaseline in your nose to keep it moist, spray a saline solution in each nostril every once in a while...

My research also indicates that you go to an Ear Nose Throat Specialist before you go ahead with the cauterization.