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Related Concept Videos

Classification of Illness01:17

Classification of Illness

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The meaning of illness is individualized to each person who experiences an alteration in health. In contrast, disease is a medical term indicating a pathological change in the structure and function of the body or mind. It is a condition that has specific symptoms and boundaries.
An illness is a response to a disease in which the person's level of functioning is changed compared with a previous level. The general classification of illness includes acute and chronic.
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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
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COPD: Pathogenesis and Clinical Features01:20

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Understanding the variety of primary symptoms and systemic complications that characterize chronic obstructive pulmonary disease (COPD) is crucial for healthcare professionals.
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Related Experiment Video

Updated: Jan 8, 2026

Author Spotlight: Advancements in Multiplex Detection of Respiratory Viruses
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Long COVID: a long road ahead.

Svetlana Blitshteyn1,2

  • 1Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA.

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PubMed
Summary

Millions suffer from Long COVID, a disabling post-viral illness. This case highlights autonomic dysfunction and ME/CFS, emphasizing the urgent need for effective Long COVID therapies and improved medical care.

Keywords:
Long COVIDautonomic dysfunctionbrain healthchronic fatigue syndrome/myalgic encephalomyelitisdysautonomianeurologypublic health

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Area of Science:

  • Infectious Diseases
  • Neurology
  • Immunology
  • Public Health

Background:

  • The SARS-CoV-2 pandemic has resulted in Long COVID, affecting millions globally with chronic illness and disability.
  • Post-acute infectious syndromes, including Long COVID, have historically lacked adequate research and therapeutic consideration.
  • Current treatments for Long COVID are primarily symptomatic and offer limited efficacy, leaving many patients disabled.

Purpose of the Study:

  • To present a case study of Long COVID with co-occurring autonomic dysfunction and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).
  • To explore immunologic and autonomic mechanisms relevant to Long COVID.
  • To discuss challenges in Long COVID patient care, public health, and specialist education.

Main Methods:

  • Case report detailing a previously healthy woman's experience with Long COVID.
  • Review of immunologic and autonomic factors implicated in Long COVID.
  • Discussion of diagnostic and therapeutic complexities for Long COVID, dysautonomia, and ME/CFS.

Main Results:

  • The case illustrates the debilitating impact of Long COVID, autonomic dysfunction, and ME/CFS.
  • Highlights the interplay of immunologic and autonomic systems in post-viral syndromes.
  • Underscores the inadequacy of current therapeutic options for these complex conditions.

Conclusions:

  • There is a critical need for enhanced understanding and development of diverse, effective therapies for Long COVID and related conditions.
  • Improved medical care, public health strategies, and specialist education are essential for managing the Long COVID epidemic.
  • Addressing Long COVID, dysautonomia, and ME/CFS requires a multi-faceted approach focusing on underlying mechanisms and patient needs.