What should you know about post inflammatory erythema and hyperpigmentation?

Erythema reflects lingering changes in superficial blood vessels and often looks red, pink, or purple. Hyperpigmentation reflects increased or redistributed pigment and may look tan, brown, or grey. One spot can show both, especially after a healing blemish. Acne commonly presents with inflamed lesions that can leave either type of colour change after the active lesion settles. These marks are usually flat, so a dip or raised edge may indicate a separate scar component.

Control the ongoing trigger, avoid squeezing lesions, and use a gentle cleanser, moisturiser, and daily broad-spectrum sun protection. Sun and repeated irritation can make colour differences more visible. A dermatologist can assess whether the main issue is redness, pigment, texture, or active Acne. Selected vascular or pigment-focused procedures may include Pulsed Dye Laser Treatment or IPL Photofacial. Treatment choice depends on skin tone, the mark’s colour, and whether inflammation is still present.

Arrange an assessment if marks are spreading, becoming painful, warm, swollen, crusted, or associated with new pus or fever. Seek advice when colour change follows a procedure and keeps worsening rather than settling. A changing spot that is raised, bleeding, or unlike the others also needs examination. Colour marks alone are not a reliable way to judge the cause.

Is the colour mainly vascular, pigment-related, or both? Is my acne still active? Which sunscreen and topical routine suit me? Would a procedure risk extra irritation or pigment change in my skin?