Difference of scalp folicullitis and scalp acne?

Same thing. Scalp folliculitis is an inflammatory disorder of the hair follicles in the scalp, and is also sometimes called "acne necrotica", which is why it is sometimes confused with acne, which does not occur on the scalp (except along the frontal hairline). In other words, the condition often called "scalp acne" is actually folliculitis, or inflammation/infection of hair follicles.

Related Questions

What is the difference between keloidalis nuchae (folliculitis) andl acne vulgaris?

Keloidalis Nuchae. Keloidalis nuchae is a destructive scarring folliculitis that occurs exclusively on the occipital scalp and posterior neck and affecting mostly african american men aged 13-25 years. Acne vulgaris is a common skin disease characterized by inflammatory lesions called zits with redness, swelling, pain, and white pus. Antibiotics used in keloidalis nuchae differ from ones used in acne vulgaris. Read more...