Related Experiment Video
Updated: Jan 29, 2026
09:51
Laparoscopic Anterior Right Hepatectomy: A Single-Center Experience
Published on: December 4, 2023
1.6K
Pediatric lichen nitidus: A single-center experience
Selcen Kundak1, Yasemin Çakır2
1Department of Dermatology, Dr. Behcet Uz Children's Research and Training Hospital, Izmir, Turkey.
Pediatric Dermatology
|February 13, 2019
Summary
Lichen nitidus (LN) often presents in a generalized form in children, frequently alongside other skin conditions. This study highlights a notable predominance of boys affected by this uncommon inflammatory eruption.
Area of Science:
- Dermatology
- Pediatric Dermatology
- Histopathology
Background:
- Lichen nitidus (LN) is a rare inflammatory skin condition.
- Understanding its presentation in children is crucial for diagnosis and management.
Purpose of the Study:
- To describe the epidemiologic, clinical, and histopathologic features of childhood lichen nitidus.
- To report on associated dermatologic conditions in pediatric patients with LN.
Main Methods:
- Retrospective case series of 17 children with biopsy-proven lichen nitidus.
- Data collected from January 2007 to March 2017.
- Analysis of demographic, clinical, and histopathologic findings.
Main Results:
- The mean age of onset was 9 years, with a male predominance (88.2%).
- Generalized lichen nitidus occurred in 41.1% of cases, with severe pruritus in 11.8%.
- Comorbid skin conditions were present in 41.1% of patients; histopathology showed lymphohistiocytic infiltration and basal vacuolar degeneration.
Conclusions:
- Lichen nitidus in children frequently presents in a generalized form.
- Nearly half of the pediatric cases were associated with other dermatologic conditions.
- A significant male predominance was observed in this cohort.
Related Concept Videos
02:33Lattice Centering and Coordination Number
11.5K
The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
Types of Unit Cells
Imagine taking a large number of identical...
11.5K
00:58Center of Gravity
6.7K
The center of gravity (COG) of an object is the point where the object's total weight is considered to be concentrated. Knowing the location of the center of gravity is useful when predicting the behavior of a moving object or designing static structures. In a uniform gravitational field, the center of gravity is similar to the center of mass (COM); yet, these two points can be positioned differently. For example, the Moon's center of mass lies very close to its geometric center, but...
6.7K
01:15Center of Gravity
2.2K
The center of gravity is the point at which an object's weight appears to be concentrated and can be used to balance the object perfectly. This point is essential in mechanics as it provides information regarding a body's stability and moments of inertia. The center of gravity does not always have to fall within the shape or boundaries of the body; it may also lie outside the body in certain cases.
To determine its location, the principle of moments can be utilized by dividing the object into...
To determine its location, the principle of moments can be utilized by dividing the object into...
2.2K
00:59Center of Mass
2.0K
The center of mass is the point at which the total mass of an object can be said to be concentrated. It is a fundamental principle in mechanics and physics that applies to all objects regardless of their shape or size. The center of gravity is the point at which an object’s weight appears to be concentrated and can be used to balance the object perfectly.
The knowledge of the center of mass can also help us to describe and predict the motion of objects. For example, when a ball is thrown...
The knowledge of the center of mass can also help us to describe and predict the motion of objects. For example, when a ball is thrown...
2.0K
01:12What is an Experiment?
17.9K
An experiment is a planned activity carried out under controlled conditions. The purpose of an experiment is to investigate the relationship between two variables. When one variable causes change in another, we call the first variable the explanatory or independent variable. The affected variable is called the response or dependent variable. In a randomized experiment, the researcher manipulates values of the explanatory variable and measures the resulting changes in the response variable. The...
17.9K
01:20Instantaneous Center of Zero Velocity
832
General plane motion, often observed in a rolling wheel, refers to a type of movement where the wheel is simultaneously rotating and translating. This complex motion can be understood by breaking it down into individual components.
To analyze this, consider two points on the wheel: point A and point B. The absolute velocity of point B can be expressed as the vector sum of the absolute velocity of point A and the relative velocity of point B with respect to point A. To simplify this analysis,...
To analyze this, consider two points on the wheel: point A and point B. The absolute velocity of point B can be expressed as the vector sum of the absolute velocity of point A and the relative velocity of point B with respect to point A. To simplify this analysis,...
832