Small ones will sometimes resolve on their own, although you have to control diet (lots of fiber), be gentle with it, and keep the area very clean to promote healing. I had had one many years ago. My doctor said it was not serious, but offered to remove it anyway. I declined, and eventually it withered away. If it is painful (mine usually wasn't, although occasionally became inflamed), there are various creams and ointments on the market to make things more comfortable while you are waiting to see what happens. The non-surgical removal suggested by my GP was ligation, which is simply tightly tying off the hemorrhoid at the base with a thread or tiny rubber band. This cuts off the circulation, and within about a week it shrivels up, drys out, and falls off. (However, ligation is not always suitable for external hemorrhoids.) Other than being gentle with the area, you don't have to do anything special while the ligation is running its course. For more serious cases, there are various surgical, cryo, or laser procedures done by specialists.