A 3-year-old boy presented with a white depressed area on his forehead and nose. The asymptomatic 4-cm lesion had developed over the course of six months. An MRI revealed no changes in the underlying bone. There was no family history of similar lesions. Serology and chemistry studies were within normal limits.
A 40-year-old black woman presented with a linear array of white macules on her face. The lesions had developed over a period of two years. Wood’s lamp examination revealed that the area was depigmented. No family members had similar eruptions; the only history of note was an aunt who suffered from thyroid disease.