Oregon Esthetician State Board

What condition inhibits melanin production and is characterized by flaky patches on the skin?

1. Tinea versicolor

2. Vitiligo

3. Melasma

4. Seborrheic dermatitis

The correct answer is: Tinea versicolor

The condition characterized by flaky patches on the skin that inhibits melanin production is Tinea versicolor. This is a fungal infection that affects the skin's pigmentation, leading to lighter or darker patches. It occurs when the Malassezia yeast, found naturally on the skin, grows excessively and interferes with the function of melanocytes, leading to uneven skin tone. These flaky patches are often noticed on the torso and can be mistaken for other skin conditions, which is why understanding its unique characteristics is crucial. Unlike other conditions listed, Tinea versicolor results from a fungal infection rather than an autoimmune mechanism or other skin issues. Vitiligo is an autoimmune condition that also inhibits melanin production but does not typically cause flaky patches; instead, it leads to distinct, depigmented areas of skin. Melasma is associated with increased melanin production, often linked to hormonal changes, and does not present as flaky skin. Seborrheic dermatitis involves flaky and scaly patches but is primarily related to inflammation rather than an inhibition of melanin production.