A 10-YEAR-OLD boy with a history of a hypocalcemic seizure at age 2 years had a 3-month history of fatigue, nausea, and weight loss. He has received calcitriol and calcium supplementation since his seizure. Depigmented patches around both eyes were noted on physical examination (Figure 1). Dental enamel hypoplasia (Figure 2), nail pitting (Figure 3), and generalized hyperpigmentation of the skin were also found.