Related Experiment Video
Updated: May 29, 2026

08:02
A Mouse Ear Model for Allergic Contact Dermatitis Evaluation
Published on: March 24, 2023
General Halleck's itchy elbows
1University of Massachusetts Medical School.
Summary
General Henry Wager Halleck
Area of Science:
- Medical History
- Military History
- Dermatology
Background:
- General Henry Wager Halleck's tenure as general-in-chief during the Civil War.
- His unpopularity and criticism from Secretary of the Navy Gideon Welles.
- Welles's diary entries detailing Halleck's persistent elbow-scratching.
Observation:
- Welles repeatedly noted Halleck's habit of scratching his elbows.
- This behavior became a notable, albeit anecdotal, aspect of Halleck's public image.
- The cause of Halleck's scratching remained unexplained in historical accounts.
Findings:
- This paper proposes a speculative medical explanation for Halleck's elbow-scratching.
- The hypothesis suggests a possible skin condition, such as atopic dermatitis.
- This dermatological issue may have been the cause or a contributing factor to the observed behavior.
Implications:
- Reinterpreting historical anecdotes through a medical lens.
- Understanding the potential impact of undiagnosed or untreated skin conditions on historical figures.
- Adding a potential layer of medical context to the study of Civil War leadership.
Related Concept Videos
Hand hygiene
Asepsis is the practice of preventing or breaking the chain of infection. The nurse employs aseptic techniques to prevent the spread of microorganisms and reduce the risk of diseases. Hand hygiene is the cornerstone of aseptic techniques and is classified into medical and surgical asepsis. Medical asepsis includes hand hygiene and the use of gloves. Surgical asepsis, or the sterile technique, refers to practices that render and keep objects and areas free of microorganisms.
Hand washing...
Hand washing...
Skin Diseases and Disorders
Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Healing II: Complications
Complications during healing arise when tissue repair is altered by local or systemic factors. These changes involve abnormal collagen deposition, altered biomechanics, and reduced vascular supply, impairing restoration of normal structure and function.Loss of FunctionScar tissue differs significantly from the original tissue it replaces. In the skin, fibrosis lacks adnexal structures such as hair follicles, sebaceous glands, and sweat glands. Their absence reduces tactile sensitivity, impairs...
Handwashing III: During the Procedure and Post-Procedure Steps
To wash hands properly, follow these steps:
Generalized Hooke's Law
The generalized Hooke's Law is a broadened version of Hooke's Law, which extends to all types of stress and in every direction. Consider an isotropic material shaped into a cube subjected to multiaxial loading. In this scenario, normal stresses are exerted along the three coordinate axes. As a result of these stresses, the cubic shape deforms into a rectangular parallelepiped. Despite this deformation, the new shape maintains equal sides, and there is a normal strain in the direction of the...
Generalized Anxiety Disorder
Generalized Anxiety Disorder (GAD) is a chronic condition characterized by excessive and uncontrollable worry that persists for at least six months, significantly interfering with daily functioning. Unlike situational anxiety, which arises in response to specific stressors, GAD often occurs without a clear cause. Individuals may experience disproportionate worry about work, health, or relationships. For instance, a person might continuously fear poor health despite normal medical evaluations or...

