If you have a pimple on the back of your head that hurts when you touch it, it could be folliculitis of the back of the head. Occipital folliculitis is usually prone to recurrence and is difficult to cure completely in a short period of time. So if folliculitis occurs in the posterior occipital area, it may sometimes be accompanied by a certain amount of abscesses, which may form tunnel-like changes, commonly referred to as penetrating folliculitis. Because penetrating folliculitis is a slowly progressive stage of inflammation, it may take longer to treat and require some antibiotic therapy. It is also important to take care of the local area and maintain hygiene.