I signed up for this site as my 22yr old son suffers from this disease. The first large cyst he got was right below his tailbone when he was in high school. It’s gotten much worse since then. He has several open sores in both armpits. He has sores that start out like boils in his groin area which are now open sores and he gets them on the inner thighs. He’s in a great deal of pain most of the time and my heart breaks for him. The worst thing that has happened is a dermatologist put him on Humira. He ended up in the hospital because the medicine affected his kidneys. The doctors wanted to put him on chemo but after 2weeks his immune system improved enough for him to come home. Unfortunately he ended up back in the hospital for another 2weeks. If anyone has any suggestions I would love to hear it.