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Related Concept Videos

Vascular Spasm01:16

Vascular Spasm

The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last for...
Endocarditis II: Clinical Features of Infective Endocarditis01:25

Endocarditis II: Clinical Features of Infective Endocarditis

Endocarditis can present various clinical features depending on the causative organism and the patient's underlying health conditions. Initially, the clinical features of infective endocarditis develop gradually, presenting with nonspecific symptoms that can be easily mistaken for other illnesses.General SymptomsEarly symptoms of infective endocarditis are fever, chills, weakness, malaise, fatigue, and weight loss. These symptoms reflect the systemic nature of the infection and the body's...
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...
Cytotoxic Edema: Pathophysiology01:21

Cytotoxic Edema: Pathophysiology

Cytotoxic edema is a form of cerebral edema characterized by intracellular swelling of neurons, astrocytes, and other glial cells. It develops when the mechanisms responsible for maintaining ionic gradients across the cell membrane become impaired. Under normal physiological conditions, the sodium–potassium ATPase actively transports sodium ions out of the cell and potassium ions into the cell, preserving osmotic balance and enabling electrical signaling. This pump requires a continuous supply...
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
Acute Inflammation III: Local and Systemic Effects01:25

Acute Inflammation III: Local and Systemic Effects

Acute inflammation produces a coordinated set of local and systemic changes that limit injury, eliminate pathogens, and initiate repair. These responses arise within minutes of infection, trauma, or chemical insult and are driven by vascular alterations and leukocyte-derived mediators. When the stimulus resolves, the reaction typically abates within days.Local EffectsAt the site of injury, arteriolar vasodilation increases blood flow, resulting in redness and warmth. Simultaneously, increased...

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Related Experiment Videos

[Vasculitis in Sweet's Syndrome].

Ines Chelly1, Alia Zehani, Amel Mbazaa

  • 1Service d'Anatomie et de Cytologie Pathologiques, Hopital La Rabta, Tunis, Tunisie.

La Tunisie Medicale
|September 19, 2012
PubMed
Summary
This summary is machine-generated.

Sweet's syndrome, a neutrophilic dermatosis, presents with skin lesions and often precedes or accompanies other diseases. Careful monitoring is essential due to its varied clinical course.

Related Experiment Videos

Area of Science:

  • Dermatology
  • Pathology

Context:

  • Sweet's syndrome, also known as acute febrile neutrophilic dermatosis, is a non-infective inflammatory skin condition.
  • Histologically, it is characterized by a neutrophilic infiltrate, with vasculitis previously considered exclusionary but now recognized in some cases.

Purpose:

  • To detail the clinical, pathological, and therapeutic features of Sweet's syndrome.
  • To analyze a series of 47 cases diagnosed between 1997 and 2011.

Summary:

  • The study analyzed 47 cases (11 males, 36 females; mean age 47) of Sweet's syndrome.
  • Common presentations included erythematous plaques/nodules on extremities, often preceded by functional symptoms (80.8%).
  • Associated conditions in 10 patients included inflammatory diseases, inflammatory bowel disease, tuberculosis, and diabetes.

Impact:

  • Findings highlight the diverse clinical presentations and associations of Sweet's syndrome.
  • Emphasizes the need for vigilant surveillance as the dermatosis can manifest before, after, or concurrently with other diagnosed diseases.