Differential diagnosis and management of hyperpigmentation

Area of Science:

• Dermatology
• Ethnic Dermatology
• Dermatologic Surgery

Background:

• Skin of colour (SOC) populations are increasing in the UK, highlighting the need for specialized ethnic dermatology.
• Hyperpigmentary disorders are common concerns in SOC, but formal training remains limited.
• Skin colour variations are influenced by melanin, genetics, hormones, and environmental factors like UV radiation.

Purpose of the Study:

• To emphasize the importance of accurate diagnosis in managing hyperpigmentary disorders in skin of colour.
• To outline a systematic approach to diagnosing hyperpigmentation based on pathogenesis.
• To discuss management strategies tailored to the cause of hyperpigmentation.

Main Methods:

• A systematic diagnostic approach integrating disease pathogenesis (reactive vs. non-reactive, melanin increase vs. cell increase, epidermal vs. dermal).
• Detailed patient history and clinical examination are crucial for accurate diagnosis.
• Classification of hyperpigmentation based on underlying mechanisms to guide treatment selection.

Main Results:

• Epidermal hyperpigmentation due to increased melanin can be treated with topical agents (e.g., hydroquinone) or procedures like laser toning and chemical peels.
• Dermal hyperpigmentation presents greater challenges for topical treatments.
• Hyperpigmentation caused by increased melanocytes or keratinocytes is best managed with high-fluence laser treatments.

Conclusions:

• Accurate diagnosis of hyperpigmentation in skin of colour is essential for effective management.
• Treatment strategies should be guided by the specific pathogenesis of the hyperpigmentary disorder.
• Further education and training in ethnic dermatology are needed to address common concerns like hyperpigmentation in SOC.