Melasma: an Up-to-Date Comprehensive Review.

Area of Science:

• Dermatology
• Pathogenesis of Skin Disorders
• Hyperpigmentation Research

Background:

• Melasma is a prevalent acquired facial hyperpigmentation disorder.
• It disproportionately affects females and individuals with darker skin types.
• Etiologies include UV exposure, hormonal factors, and genetics.

Purpose of the Study:

• To provide a comprehensive review of melasma.
• To update current understanding of its epidemiology, pathogenesis, and clinical features.
• To summarize therapeutic options for this challenging condition.

Main Methods:

• Literature review of epidemiological data.
• Analysis of histological findings in melasma.
• Synthesis of evidence for various treatment modalities.

Main Results:

• Melasma exhibits diverse histological features including epidermal/dermal pigmentation and vascular changes.
• Topical (hydroquinone, retinoids), oral (tranexamic acid), and procedural (lasers, peels) treatments show efficacy.
• Combination therapies generally outperform monotherapies.

Conclusions:

• Melasma presents complex pathogenesis and histology.
• A range of treatments exist, with combination therapy often yielding superior outcomes.
• Further research is needed for this therapeutically challenging condition.