Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

2° Amines to N-Nitrosamines: Reaction with NaNO2

2° Amines to N-Nitrosamines: Reaction with NaNO₂

Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.

Nuclear Localization Signals and Import

Nuclear Localization Signals and Import

Proteins targeted to the nucleus carry short stretches of amino acid sequences called the nuclear localization signal or NLS. Classical nuclear localization signals are of two types: monopartite and bipartite NLS. Monopartite classical NLS (cNLS) consists of a single cluster of 4-8 amino acids. Bipartite cNLS consists of two clusters of 2-3 amino acids and a 9-12 residue long proline-rich linker bridging the two clusters. Signal clusters are rich in positively charged amino acids such as...

Goiter

Goiter

Goiter refers to an abnormal enlargement of the thyroid gland that may appear as a diffuse goiter (uniform enlargement) or nodular (single or multiple nodules). Functionally, it is classified as nontoxic (normal/low hormone levels) or toxic (excess hormone production).PathophysiologyDiffuse thyroid enlargement typically results from prolonged stimulation by thyroid-stimulating hormone (TSH) or TSH-like agents, commonly seen in hypothyroidism or iodine deficiency. In contrast, in hyperthyroid...

Nuclear Stability

Nuclear Stability

Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together in the...

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological Investigation III: Pulmonary Angiogram and PET Scan

Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Langerhan cell histiocytosis: a child presenting with nine months history of fever.

Journal of Ayub Medical College, Abbottabad : JAMC·2015

Same author

Association between psoriasis and coeliac disease related antibodies.

Journal of Ayub Medical College, Abbottabad : JAMC·2015

Same author

Orf with unusual features.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP·2014

Same author

Kindler's syndrome: a report of five cases in a family.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP·2014

Same author

Late onset erythropoietic porphyria (Gunther's disease).

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP·2011

Same author

Paraneoplastic Addisonian pigmentation and acquired ichthyosis as presenting features of multiple myeloma.

Journal of the College of Physicians and Surgeons--Pakistan : JCPSP·2011

Same journal

Dupilumab-Associated Erythema Multiforme-Like Eruption With Lichenoid Histology in a Paediatric Patient: A Case Report.

The Australasian journal of dermatology·2026

Same journal

Contact Allergens Relevant to LGBTQI Populations: A Narrative Review and Practical Considerations.

The Australasian journal of dermatology·2026

Same journal

A Retrospective Review of Scabies Cases Managed by the Dermatology Department in a North Queensland Hospital Over a 10-Month Period.

The Australasian journal of dermatology·2026

Same journal

Telangiectasia in Systemic Sclerosis Is a Marker of Increased Disease Morbidity and Mortality: Analyses From the Australian Scleroderma Cohort Study.

The Australasian journal of dermatology·2026

Same journal

Allergic Contact Dermatitis Caused by Online-Purchased Black Henna Temporary Tattoos.

The Australasian journal of dermatology·2026

Same journal

Alpelisib for TEK- and PIK3CA-Related Venous Malformations: A Systematic Review.

The Australasian journal of dermatology·2026

See all related articles

Search research articles

Related Experiment Video

Updated: May 22, 2026

Initial Evaluation of Antibody-conjugates Modified with Viral-derived Peptides for Increasing Cellular Accumulation and Improving Tumor Targeting

Initial Evaluation of Antibody-conjugates Modified with Viral-derived Peptides for Increasing Cellular Accumulation and Improving Tumor Targeting

Published on: March 8, 2018

Facial lichen nitidus actinicus.

Nasser Rashid Dar¹, Sibghat Ullah Rao

¹Dermatology Department, Combined Military Hospital, Lahore Cant, Pakistan. nasser_dar@yahoo.com

The Australasian Journal of Dermatology

|May 11, 2012

Summary

This summary is machine-generated.

This case study describes an 18-year-old woman diagnosed with lichen nitidus, a rare skin condition. The patient presented with a unique presentation of the condition exclusively on her face.

More Related Videos

Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery

Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery

Published on: May 4, 2022

Detection of Nuclear Blebbing and DNA Leakage in Mammalian Cells by Immunofluorescence

Detection of Nuclear Blebbing and DNA Leakage in Mammalian Cells by Immunofluorescence

Published on: January 17, 2025

Related Experiment Videos

Last Updated: May 22, 2026

Initial Evaluation of Antibody-conjugates Modified with Viral-derived Peptides for Increasing Cellular Accumulation and Improving Tumor Targeting

Initial Evaluation of Antibody-conjugates Modified with Viral-derived Peptides for Increasing Cellular Accumulation and Improving Tumor Targeting

Published on: March 8, 2018

Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery

Electromagnetic Navigation Transthoracic Nodule Localization for Minimally Invasive Thoracic Surgery

Published on: May 4, 2022

Detection of Nuclear Blebbing and DNA Leakage in Mammalian Cells by Immunofluorescence

Detection of Nuclear Blebbing and DNA Leakage in Mammalian Cells by Immunofluorescence

Published on: January 17, 2025

Area of Science:

Dermatology
Clinical Case Reports

Background:

Lichen nitidus is a rare, benign inflammatory skin condition.
It typically presents with small, pinpoint papules on the trunk and extremities.

Observation:

An 18-year-old female patient presented with a distinctive dermatological condition.
The rash was exclusively distributed across her facial area.

Findings:

The patient was diagnosed with lichen nitidus.
This case highlights an unusual facial-only presentation of lichen nitidus.

Implications:

This case expands the known spectrum of lichen nitidus presentations.
Facial lichen nitidus may require specific diagnostic and management considerations.