CASE 1
Amanda is a 35-year-old, Black woman currently working as a law firm secretary. She denies being a smoker and does not have any known health conditions. After an acne flare-up, her dermatologist recommended a nightly retinoid-based facial cream (triple combination topical prescription, containing adapalene, clindamycin, and benzoyl peroxide), which helped resolve the issue. However, she developed significant dark spots on her forehead and cheeks, making her self-conscious and anxious, especially when interacting with clients at work. During a follow-up, her dermatologist noted discrete hyperpigmented macules on her cheeks and forehead, consistent with postinflammatory hyperpigmentation (PIH). Amanda’s skin type is documented as Fitzpatrick skin type (FST) IV, and she reports no other known conditions or medical concerns related to her skin.
Which of the following physiologic/biologic features of skin of color would increase Amanda’s risk for developing hyperpigmentation conditions?
Melanocyte reactivity refers to the responsiveness of melanocytes (melanin-producing cells) to stimuli, such as ultraviolet (UV) radiation, inflammation, and hormonal changes. Increased reactivity can lead to ABSTRACToverproduction of melanin, causing hyperpigmentation conditions like melasma or PIH. In individuals with darker skin types, heightened melanocyte reactivity significantly raises the risk of these conditions, making it a critical factor in assessing skin health, determining susceptibility to pigmentation disorders, and guiding treatment selection.
Which of the following physiologic/biologic features of skin of color would increase Amanda’s risk for developing hyperpigmentation conditions?
- Clustered pattern of melanocyte distribution
- Melanocyte reactivity
- High levels of ceramide
- Loosely packed stratum corneum layers
Melanocyte reactivity refers to the responsiveness of melanocytes (melanin-producing cells) to stimuli, such as ultraviolet (UV) radiation, inflammation, and hormonal changes. Increased reactivity can lead to ABSTRACToverproduction of melanin, causing hyperpigmentation conditions like melasma or PIH. In individuals with darker skin types, heightened melanocyte reactivity significantly raises the risk of these conditions, making it a critical factor in assessing skin health, determining susceptibility to pigmentation disorders, and guiding treatment selection.
DISCUSSION
How can we help patients with skin of color (SOC) achieve radiant and healthier-looking skin? This begins with understanding the ethnic and racial differences in skin, which stem from unique physiologic and structural characteristics.
The distribution of melanosomes within melanocytes and keratinocytes varies across the spectrum of skin pigmentation. In individuals with darkly pigmented skin, melanosomes are larger and dispersed individually, whereas in lightly pigmented skin, they are smaller and clustered together.1,2 This biologic trait contributes to the observed skin color. Although many physiologic properties are similar across racial and ethnic groups, certain differences have been consistently noted. For example, 2 comparative studies found lower ceramide content in Black healthy subjects compared to White or Asian subjects.3-5
Although many physiologic properties are similar across racial and ethnic groups, specific differences have been reported. For example, 2 comparative studies found lower ceramide content in Black healthy subjects compared to White or Asian subjects.3-5 Other studies have demonstrated that the overall thickness of the stratum corneum in Black
The distribution of melanosomes within melanocytes and keratinocytes varies across the spectrum of skin pigmentation. In individuals with darkly pigmented skin, melanosomes are larger and dispersed individually, whereas in lightly pigmented skin, they are smaller and clustered together.1,2 This biologic trait contributes to the observed skin color. Although many physiologic properties are similar across racial and ethnic groups, certain differences have been consistently noted. For example, 2 comparative studies found lower ceramide content in Black healthy subjects compared to White or Asian subjects.3-5
Although many physiologic properties are similar across racial and ethnic groups, specific differences have been reported. For example, 2 comparative studies found lower ceramide content in Black healthy subjects compared to White or Asian subjects.3-5 Other studies have demonstrated that the overall thickness of the stratum corneum in Black
