Diagnosis: Post-inflammatory hyperpigmentation (acne sequelae)
A 24-year-old female presents with persistent brown marks on her cheeks following a history of acne. This case highlights the common sequelae of acne in patients with skin of color, emphasizing the importance of understanding post-inflammatory hyperpigmentation as a frequent concern in dermatological practice.
A 24-year-old African American female presents with a 6-month history of persistent brown marks on her cheeks, which developed after resolving inflammatory acne lesions. She reports that the discoloration has not improved with over-the-counter topical treatments. On examination, well-defined, hyperpigmented macules are noted on the cheeks.Skin type: Fitzpatrick skin type IVLesion characteristics: Brown to dark brown macules, well-defined bordersDistribution: Cheeks, bilaterallyAcne history: Moderate inflammatory acne, previously treated with topical retinoidsAssociated symptoms: No pruritus or pain
The patient experienced her first acne lesions at age 16, with subsequent intermittent flares. She attributes her recent exacerbation to hormonal changes related to her menstrual cycle. Despite using over-the-counter topical treatments, including benzoyl peroxide and salicylic acid, she reports minimal improvement. Her past medical history is unremarkable, and there is no family history of dermatological conditions. She denies any history of significant sun exposure or skin trauma.Onset: Acne began at age 16, with post-inflammatory changes noted after lesions healed.Triggers: Hormonal fluctuations and stress.Prior treatments: Over-the-counter topical agents with limited success.Social history: Non-smoker, minimal sun exposure.Family history: No significant dermatological conditions noted.
Acute / First-Line ManagementTopical hydroquinone: 2% to 4% applied twice daily for up to 3 months, with monitoring for irritation.Topical retinoids: Tretinoin 0.025% to 0.1% applied nightly to enhance skin turnover and promote lightening.Physical sun protection: Broad-spectrum SPF 30 or higher applied daily to prevent further hyperpigmentation.Workup and Diagnostic ConfirmationClinical examination: Typically sufficient for diagnosis; consider biopsy if features are atypical.Photodocumentation: To monitor changes over time.Long-Term ManagementMaintenance therapy: Continue topical retinoids or consider azelaic acid 15% to 20% for long-term management.Laser therapy: Consider Q-switched Nd:YAG laser or fractional laser in resistant cases.Patient education: Emphasize the importance of sun protection and adherence to treatment regimens.
Melasma: Characterized by symmetrical brown patches typically on the face; often related to hormonal changes.Post-inflammatory erythema: Redness rather than pigmentation, often transient, following inflammation.Seborrheic keratosis: Benign lesions that may appear similar; typically have a warty surface and are more common in older individuals.Dermatosis papulosa nigra: Common in individuals with darker skin; presents as small, dark papules, typically on the face.Acne scars: Atrophic or hypertrophic scars may be confused with hyperpigmented lesions; scars often have a different texture.Lichen planus pigmentosus: Characterized by irregular hyperpigmented macules, often in sun-exposed areas; associated with pruritus.Drug-induced pigmentation: Certain medications can cause pigmentation changes; a thorough medication history is crucial.
High-Yield PearlsUnderstanding pigmentation: Post-inflammatory hyperpigmentation is common in skin of color and can persist for months to years.Sun protection: Essential in managing and preventing worsening of hyperpigmentation.Topical agents: Hydroquinone and retinoids are first-line treatments; consider combination therapy for enhanced efficacy.Patient education: Inform patients about the nature of their condition and the importance of adherence to treatment.Alternative therapies: Explore laser options for resistant cases, but ensure appropriate skin type assessment to avoid complications.Post-inflammatory hyperpigmentation is often more pronounced and prolonged in patients with skin of color; effective management requires both treatment and patient education.
Tags: post-inflammatory hyperpigmentation, acne, skin of color