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Related Concept Videos

Acute Pharyngitis01:30

Acute Pharyngitis

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Introduction
Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
Acute pharyngitis can be categorized based on its underlying cause:
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Tonsillitis II: Management01:26

Tonsillitis II: Management

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This lesson will focus on the different treatment options for managing tonsillitis, which typically depend on the cause and severity.
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Methods of reducing fever01:22

Methods of reducing fever

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The signs and symptoms of fever include hot and dry skin, flushed face, thirst, muscle aches, anorexia, headache, tachycardia, tachypnea, and fatigue. Elevated body temperature is reduced using two methods: pharmacological and nonpharmacological. Proper identification and treatment of the root cause of a fever is of utmost importance.
Pharmacological Methods of Reducing Fever:
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Drugs Used in Upper Respiratory Disorders: Overview01:16

Drugs Used in Upper Respiratory Disorders: Overview

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Upper respiratory tract disorders, including viral infections and allergic rhinitis, cause significant discomfort and disrupt daily life. Managing these conditions involves a variety of drugs, such as antihistamines, intranasal steroids, decongestants, antitussives, expectorants, and mucolytics. Specific examples of drugs in each category are provided.
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Chronic Pharyngitis01:23

Chronic Pharyngitis

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Chronic pharyngitis refers to persistent inflammation of the pharyngial mucosa.
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Upper Respiratory Drugs: Antitussives, Expectorants, and Mucolytics01:23

Upper Respiratory Drugs: Antitussives, Expectorants, and Mucolytics

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Respiratory symptoms, such as congestion and cough, commonly accompany respiratory tract conditions. Various medications, such as antitussives, expectorants, and mucolytics, play crucial roles in providing relief.
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Related Experiment Video

Updated: Apr 17, 2026

Author Spotlight: Evaluating the Adjuvant Efficacy and Safety of Angong Niuhuang Pill in Viral Encephalitis Treatment
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Author Spotlight: Evaluating the Adjuvant Efficacy and Safety of Angong Niuhuang Pill in Viral Encephalitis Treatment

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Echinacea for preventing and treating the common cold.

Marlies Karsch-Völk1, Bruce Barrett2, Klaus Linde1

  • 1Institute of General Practice, Technische Universität München, Klinikum rechts der Isar, München, Germany.

JAMA
|February 11, 2015
PubMed
Summary
This summary is machine-generated.

Echinacea products show no significant effect on preventing or shortening the duration of the common cold. However, an exploratory analysis suggests a potential small reduction in cold incidence with Echinacea use.

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Area of Science:

  • Herbal medicine research
  • Infectious disease epidemiology

Background:

  • The common cold is a widespread viral infection.
  • Echinacea is a popular herbal remedy often used for cold prevention and treatment.

Purpose of the Study:

  • To evaluate the efficacy of Echinacea products in reducing the incidence and duration of the common cold compared to placebo.

Main Methods:

  • Systematic review and meta-analysis of individual prophylaxis and treatment trials.
  • Comparison of outcomes between Echinacea groups and placebo groups.

Main Results:

  • Individual prophylaxis trials did not demonstrate a significant association between Echinacea products and common cold prevention.
  • An exploratory meta-analysis indicated a potential, though small, reduction in cold incidence with Echinacea use.
  • Treatment trials found no association between Echinacea products and a shorter duration of common cold symptoms.

Conclusions:

  • Current evidence does not support Echinacea products for common cold prevention or treatment duration.
  • Further research may be warranted to explore the potential modest effect on cold incidence.