Have you ever noticed acne all over your face? It keeps coming back even though you have tried all the skin care products. It goes, but it comes back again. Then, it might be more than just a skincare mishap and could be a sign of post-inflammatory erythema (PIE).What is PIE?PIE appears as red, pink, or purple marks on the skin, often caused by acne or other inflammatory skin conditions. While PIE can naturally fade over time, home and medical treatments can help speed up its resolution.There are studies that show that PIE is more common in people with lighter skin tones, especially what's known as the Fitzpatrick skin types I-III. The first three of these skin types are ivory, beige and light brown, which tend to experience PIE. Whereas medium brown, dark brown and very dark skin, which falls under Skin Type VI are less at risk of developing PIE.What Causes PIE?PIE occurs when small blood vessels, or capillaries, beneath the skin become dilated, inflamed, or damaged.There are certain reasons why might it happen, including:Cystic acne: The most frequent cause.Other inflammatory skin conditions: Such as dermatitis and sunburn.These superficial blotches typically fade on their own, but treatments can significantly reduce their visibility.How to identify the symptoms?PIE spots often resemble acne marks but are distinct because they lack the bumps seen in blackheads or whiteheads. Key characteristics include:Colors: Red, pink, or deep purple.Patterns: Can appear as clusters or isolated dots.How can you treat them at home?Although PIE can take up to six months to fade naturally, several at-home treatments may help:Topical MedicationsHydrocortisoneA mild steroid that reduces inflammation.Should be used under a dermatologist’s guidance to avoid side effects.Vitamin CProven to reduce redness caused by UVB rays.Known for its skin-lightening properties, making it beneficial for both PIE and post-inflammatory hyperpigmentation (PIH).NiacinamideA form of vitamin B3 that reduces inflammation and retains skin moisture. It may also help minimize cystic acne breakouts.Medical Treatments for Stubborn PIEIf topical remedies aren’t effective, a dermatologist can offer advanced treatments:Laser TreatmentsIntense pulsed light (IPL) and pulsed dye lasers target damaged blood vessels, reducing discoloration and inflammation.Multiple sessions may be needed for visible results.MicroneedlingA dermaroller with tiny needles creates controlled skin injuries, promoting collagen production and reducing PIE.Often combined with topical treatments like vitamin C or tretinoin for enhanced effects.Should be performed by a professional to avoid irritation or scarring.PIE vs. Post-Inflammatory Hyperpigmentation (PIH)It’s important to distinguish PIE from PIH, another condition caused by acne or skin inflammation:PIE: Red, pink, or purple marks caused by blood vessel damage.PIH: Brown patches caused by excess melanin production.PIH is more common in darker skin tones (Fitzpatrick types IV-VI), while PIE is typically seen in lighter skin tones (types I-III). Both conditions can occur simultaneously in some individuals.When to See a DermatologistIf PIE affects your confidence or persists despite at-home treatments, consult a dermatologist. A professional can:Recommend targeted treatmentsAddress underlying causes like acne or other skin conditions.By understanding and treating PIE, you can restore your skin's clarity and confidence effectively.