What Causes Abscesses On The Scalp Along With Puffy Eyes?

Okay I suddenly got 4 absesses on my scalp so bad that one gave me a puffy eye so bad it looked like someone socked me,then the one on top of my head made my forehead swell ..all 4 of them came to a head and left a Hugh whole once I got the core out of them. I had that crawly sensation with all of them,now I m left with round patches of baldness .will the hair grow Back.info useful to you would be that I dye my hair often ,I often wear hair extensions and sometimes wigs on occasion just for different looks and styles,I used to be an i.v. drug user of heroin,cocaine and most recently Meth but currently am not using a needle at all and my boyfriend was told he has the HIV virus,i couldn t be checked because of the veins I ve abused over the years. He found that out after being treated for a. Std that we both had