Dark spot after acne?

Postinflammatory. Inflammation of the skin is often followed by darkening that may last for months. All acne can be managed today. If benzoyl peroxide (and/or the oral contraceptive pill for a female for whom it's right) doesn't work, topical Clindamycin or some other medicine from your physician will help. Don't try to treat the dark spot (not worth trouble/ risk) or even give it much thought (no face is perfect).