Related Experiment Video
Updated: Aug 6, 2026
12:23
Granulocyte-dependent Autoantibody-induced Skin Blistering
Published on: October 12, 2012
Acute generalized exanthematous pustulosis sine pustules
Justin Raman1, Riley Shin2, Mary Fitzgibbon1
1Department of Dermatology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA.
Proceedings (Baylor University. Medical Center)
|July 21, 2026
Summary
Acute generalized exanthematous pustulosis (AGEP) is a severe skin reaction. Histopathology is crucial for diagnosis, especially when pustules are absent or medication history is unclear.
Area of Science:
- Dermatology
- Pharmacology
Background:
- Acute generalized exanthematous pustulosis (AGEP) is a severe cutaneous adverse reaction.
- It typically manifests as sterile pustules, primarily in flexural areas.
Purpose of the Study:
- To highlight the importance of histopathologic investigation in diagnosing AGEP.
- To address diagnostic challenges in cases lacking typical pustular presentation or with unclear medication history.
Main Methods:
- Review of clinical and histopathological findings in AGEP cases.
- Analysis of diagnostic criteria and challenges.
Main Results:
- AGEP can present without clinically apparent pustules.
- Histopathology is essential for confirming diagnosis in atypical presentations.
Conclusions:
- Histopathologic examination is critical for accurate AGEP diagnosis.
- This is particularly true in complex cases with ambiguous clinical signs or medication histories.
Keywords:
Acute generalized exanthematous pustulosisdrug rashsevere cutaneous adverse reactionsine pustulesMore Related Videos
Related Concept Videos
01:24Smallpox
Smallpox is a severe contagious disease caused by the Variola major virus, a double-stranded DNA member of the Poxviridae family.Variola major transmission occurs primarily via inhalation of virus-laden droplets or direct contact with infectious scabs. The incubation period averages approximately seven days, although it may range from 7 to 17 days depending on the inoculum and host factors.Clinically, the prodromal phase is marked by an abrupt onset of high fever, malaise, headache, and myalgia.
01:27Acne Infection
Acne is a multifactorial skin condition primarily affecting adolescents and young adults, with a global prevalence estimated to exceed 75% in this demographic. The condition is characterized by the formation of comedones (blackheads and whiteheads), papules, pustules, nodules, and, in severe cases, cysts, particularly in areas rich in sebaceous glands such as the face, neck, chest, and back. The pathogenesis involves increased sebum production, follicular hyperkeratinization, colonization by...
01:20Chickenpox
Chickenpox is an acute, highly contagious disease caused by the varicella-zoster virus (VZV), a double-stranded DNA virus belonging to the Herpesviridae family. Its transmission occurs primarily through the inhalation of respiratory droplets or direct contact with vesicular fluid from skin lesions. The incubation period typically ranges from 10 to 21 days, during which the virus replicates and disseminates through sequential phases within the host. Although generally self-limiting in children,...
01:29Staphylococcal Skin Infections
Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
01:19Hypersensitivity Reactions: Immune-Complex Reactions
Type III hypersensitivity reactions occur when antigen–antibody complexes form and activate the complement system. Normally, these complexes help the clearance of antigens by phagocytes and red blood cells. However, when large numbers of immune complexes are present, they can deposit in tissues—particularly in the walls of blood vessels—leading to inflammation and tissue injury. These deposits trigger complement activation and neutrophil recruitment, resulting in serum sickness, a systemic...
01:14Atypical Pneumonia
Atypical pneumonia, often caused by Mycoplasma pneumoniae, is a form of pulmonary infection that differs from the classical presentation of bacterial pneumonia in both its cause and clinical symptoms. Mycoplasma pneumoniae is a pleomorphic bacterium notable for its lack of a rigid cell wall. This structural characteristic imparts resistance to beta-lactam antibiotics and significantly influences the bacterium’s behavior within the human host.Other pathogens responsible for the disease include...