A patient's record indicates a skin condition in which depigmentation appears on different parts of the body that are often exposed to sunlight. A skin biopsy reveals a lack of melanocytes. Which condition does this describe?

A. There is no known safe level of alcohol use during pregnancy or when trying to get pregnant:

Research has shown that any alcohol consumption during pregnancy can potentially cause fetal alcohol spectrum disorders (FASD). There is no safe amount.

B. Alcohol prior to conception cannot impact the fetus:

Alcohol use prior to conception can affect fertility and early embryonic development, especially since many pregnancies are unrecognized during early stages.

C. Alcohol exposure is most dangerous during the last trimester:

All trimesters are critical, but the first trimester is often considered the most vulnerable for teratogenic effects, especially for organ formation.

D. Fetal alcohol exposure increases the likelihood of twins or other multiples:

Alcohol exposure does not increase the likelihood of multiple births; it causes developmental abnormalities.

A. Having greater than 50 moles and green or blue eyes:

Risk factors for melanoma include having many moles, fair skin, light-colored eyes, and history of sunburns.

B. Intermittent claudication and diabetes:

These are vascular and metabolic problems, not related to melanoma risk.

C. Black or brown hair and darker pigmented skin:

Darker skin provides some natural protection against UV radiation, reducing melanoma risk (although melanoma can still occur).

D. Younger than 18 years of age and obesity:

Age under 18 and obesity are not primary risk factors for melanoma. Cumulative sun exposure and genetic predisposition are much more relevant.