I have problems with boils. They usually are hard but really sore-with warm compresses ir antibiotics they go away after coming to a head and bursting or just going down in size. The last three that I have had are different. They are filled with liquid and drain sometimes with blood. They are painful. It s right wear my elastic in my underwear hits. Surgeon now is calling it a cyst. He put me on a very strong antibiotic that hurt my stomach so bad. I had to take probiotic and eat yogurt but still hurt my stomach. I finished antibiotic and it brought down the size but flared up again. My doctor calls it a boil and surgeon calls it a cyst. I just don t want to get any anymore. It s painful.