Childhood Lichen Nitidus A narrative review

Lichen nitidus is an uncommon inflammatory dermatosis characterized by discrete, pinpoint to pinhead-sized, shiny, flat-topped or dome-shaped papules. Although it may occur at any age, most reported cases involve children and adolescents. This narrative review synthesizes available case reports and small series on childhood lichen nitidus, covering epidemiology, clinical spectrum, diagnosis, management, and outcomes. The condition remains rare, with ages at presentation ranging from infancy to late adolescence and a frequent male predominance. Geographic distribution is worldwide. Most affected children are otherwise healthy, though associations with atopy, Down syndrome, and other conditions have been noted. Classic lesions measure 1–2 mm and are flesh-colored, pink, or hypopigmented; recognized variants include generalized, actinic, acral, perforating, nail-predominant, facial hypopigmented, Blaschkolinear, and follicular forms. The Koebner phenomenon is common, and most lesions are asymptomatic or only mildly pruritic. Diagnosis is primarily clinical and supported by the characteristic “claw-clutching-a-ball” histopathology; dermoscopy and non-invasive imaging can provide additional clues. Laboratory investigations are typically normal. Because the disorder is often self-limited, observation is appropriate for limited or asymptomatic disease. When treatment is indicated, topical corticosteroids, calcineurin inhibitors, and narrow-band ultraviolet B phototherapy are among the most frequently successful options; systemic agents are reserved for refractory or extensive cases. Complete resolution occurs in a substantial proportion of patients within months to 1–2 years, with residual dyspigmentation common but recurrence uncommon. Childhood lichen nitidus carries a favorable prognosis with minimal long-term morbidity. Key words · Lichen nitidus, Childhood lichen nitidus ,Pediatric lichen nitidus , Pediatric dermatology, Diagnosis, Treatment, Histopathology