Hi i recently sent you a question about waxing. [see Hair Regrowth After Waxing Scalp]
For some reason the waxed area appears worse. I am worried that I may have developed folliculitis on my scalp as a result. My entire scalp itches. It would be helpful if you could give me some information about folliculitis as well as the differences if any between folliculitis and folliculitis decalvans. Also it would be helpful if you could tell me what to do to contain the hair loss to only the waxed area basically prevent it from spreading.

Folliculitis is a condition where the hair follicles get infected because of bacterial invasion, often secondary to some irritation or wound of the skin. Folliculitis can spread from one hair follicle to another by touching or scratching it, making it worse. It is a fairly common condition.
Folliculitis Decalvans is a rare condition affecting mainly the scalp leading to scarring alopecia. The cause of the condition is still unknown, abnormal host response to Staphylococcus aureus (a bacterial infection) has been postulated. Folliculitis Decalvans causes scarring with hair loss (alopecia). There are areas of “corn stalking” (grouped hairs arising within the area of alopecia), redness (erythema), crusting, and pustules. Due to severe scarring, permanent hair loss occurs in the involved sites.
As you may be aware, this is a diagnosis not for the amateur. Get a good dermatologist to take care of you, starting off with a proper diagnosis. Appropriate antibiotics will be recommended by the doctor, if indicated.