Suggest Medication For Itchy Lump On Head,neck And Ears

Hi In hoping you can help me, I have had this problem for some time I have been to my doctor but thats not helped. I have these sores that I keep getting on the top of my head and some around my neck and ears they same spots but when they come back its like there are always more every time. Some times it seems they start out like a little sore and if you touch it you can fill a little pop and the liquid comes out and scabs up. and it gets a hard top from the liquid and just get bigger and more sore. Some fill small lumps on my head and some times itch and do so get open and sore to the touch. the ones on my neck and by my ears are just lumps that come up and get bigger as days go by and are very sore to the touch..I have had this for around 9 mos now..I also have a few of them sores one on my back side that will not go away it gets open and stay that way for some time and when its closes well its still there and is not sore but you know where it is and you know it will be back..Help