Wisconsin Esthetics State Board Practice Test 2026 – Comprehensive Exam Prep

Question: 1 / 400

What is the main cause of lentigo?

Genetic predisposition

Sun exposure

Lentigo, often referred to as liver spots or age spots, primarily results from sun exposure. These flat, brown spots appear on areas of the skin that have had significant exposure to ultraviolet (UV) light over the years. The UV rays from the sun stimulate melanocytes, the skin cells responsible for producing melanin, leading to localized hyperpigmentation. This condition becomes more prevalent with age, particularly in individuals who have spent considerable time outdoors without adequate sun protection.

While genetic predisposition, hormonal changes, and allergic reactions can influence skin conditions, they are not the primary factors associated with the formation of lentigo. Genetic predisposition might play a role in how a person’s skin reacts to sun exposure, but the direct cause of lentigo is undeniably tied to cumulative UV exposure.

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Hormonal changes

Allergic reactions

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