Melasma

A dermatologist uses a Wood's lamp to examine a patient with facial hyperpigmentation. The lesions show marked accentuation under the Wood's lamp. This finding is most consistent with which type of melasma?

A 35-year-old woman with epidermal melasma is seeking treatment. Which of the following is considered the first-line topical therapy for melasma?

A 30-year-old pregnant woman presents with symmetrical, hyperpigmented macules and patches on her cheeks, forehead, and upper lip. The lesions are brownish-gray and have irregular borders. Which of the following is the most likely diagnosis?

Beyond UV radiation and hormonal influences, recent research suggests that which of the following cellular components plays a significant role in the pathogenesis of melasma by promoting melanogenesis and pigment transfer?

Histopathological examination of a skin biopsy from a patient with melasma would most likely reveal which of the following findings?