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Related Concept Videos

Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
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...
Rocky Mountain Spotted Fever01:26

Rocky Mountain Spotted Fever

Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Atypical Pneumonia01:14

Atypical 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...
Toxoplasmosis01:28

Toxoplasmosis

Toxoplasmosis, a zoonotic disease caused by the protozoan Toxoplasma gondii, poses significant public health challenges globally due to its high seroprevalence and varied clinical manifestations. As an obligate intracellular parasite, T. gondii can infect all warm-blooded vertebrates, but felids are its only definitive hosts, shedding unsporulated oocysts into the environment. Humans typically acquire the infection through ingestion of tissue cysts in undercooked meat or oocysts from...
Introduction to Language of Pathophysiology ll01:17

Introduction to Language of Pathophysiology ll

This lesson explores key terms that describe how diseases progress, their outcomes, and their distribution in populations.Diagnostic tests identify diseases and monitor treatment. These include blood and urine tests, biopsies, imaging (X-ray, MRI), and detection of infectious agents.Remission is a reduction or disappearance of symptoms.Exacerbation refers to the worsening of symptoms, such as increased wheezing during an asthma attack.A precipitating factor triggers an acute episode, while a...

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Related Experiment Video

Updated: Jun 23, 2026

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
07:20

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR

Published on: February 4, 2018

[Post Lyme syndrome as a clinical problem].

Anna Moniuszko1, Piotr Czupryna, Joanna Zajkowska

  • 1Department of Infectious Diseases and Neuroinfections, Medical University of Bialystok, Poland. annamoniuszko@op.pl

Polski Merkuriusz Lekarski : Organ Polskiego Towarzystwa Lekarskiego
|April 25, 2009
PubMed
Summary

Post-Lyme Syndrome (PLS) is a chronic condition following Lyme disease, causing persistent fatigue and pain. Its exact cause remains unknown, complicating diagnosis and treatment for affected patients.

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Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research
08:23

Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research

Published on: August 31, 2013

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Last Updated: Jun 23, 2026

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR
07:20

Detecting the Lyme Disease Spirochete, Borrelia Burgdorferi, in Ticks Using Nested PCR

Published on: February 4, 2018

Cultivation Methods of Spirochetes from Borrelia burgdorferi Sensu Lato Complex and Relapsing Fever Borrelia
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Cultivation Methods of Spirochetes from Borrelia burgdorferi Sensu Lato Complex and Relapsing Fever Borrelia

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Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research
08:23

Feeding of Ticks on Animals for Transmission and Xenodiagnosis in Lyme Disease Research

Published on: August 31, 2013

Area of Science:

  • Infectious Diseases
  • Neurology
  • Rheumatology

Context:

  • Lyme disease, a tick-borne illness caused by Borrelia burgdorferi, can lead to long-term health issues.
  • Post-Lyme Syndrome (PLS) is increasingly reported in patients with a history of treated Lyme disease.
  • PLS presents with persistent symptoms like fatigue, pain, and cognitive difficulties.

Purpose:

  • To review the current understanding of Post-Lyme Syndrome.
  • To highlight the diagnostic challenges and unknown pathogenesis of PLS.
  • To discuss the limited therapeutic options for PLS.

Summary:

  • PLS is characterized by prolonged fatigue, widespread musculoskeletal pain, dysmnesia, and concentration issues.
  • The pathogenesis of PLS is not fully understood but may involve persistent infection or immune responses.
  • Diagnostic criteria for PLS are challenging, with often negative serological tests.

Impact:

  • PLS poses a significant clinical, diagnostic, and therapeutic challenge.
  • Current management for PLS relies on symptom relief with antidepressants, analgesics, and anti-inflammatories.
  • Further research is needed to elucidate PLS pathogenesis and develop effective treatments.