JAMES M.GRICHNIKMD, PhD
Adolescent children and young adults often have many acquired nevocellular nevi. By age 40 years, many of the nevi have disappeared. The evolutional changes can be so subtle that the nevi disappear without notice.
The targetoid nevus is distinctive in appearance, with its striking targetlike shape, reduced color contrast, and softer melanin pigmentation. This nevus is much more common than the literature would suggest.1 The evolutionary pattern is, like the halo nevus, patient and type specific. Once initiated, the process is usually completed within 6 to 12 months.
Lloyd KM. The Significance of Targetoid Nevus. Arch Dermatol. 2006;142(10):1384. doi:10.1001/archderm.142.10.1384