A long knot at the hairline

about the hairline a circle of long pimples. The hairline area shows pimples, more common is acne, folliculitis, there are some rare, such as furuncle. Specific is which kind of need to go to the hospital for face diagnosis, doctor evaluation, if necessary, need to do fungal smear examination or bacterial culture, determine which type belongs to. If acne, can use fruit acid, or topical isotretinoin ointment external application. If folliculitis or boils are associated with bacterial infections, use an antibacterial or antibiotic ointment.