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Related Concept Videos

Acne Infection01:27

Acne 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...
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists01:23

Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists

Prostacyclin receptor agonists are a class of therapeutic agents integral to managing pulmonary arterial hypertension (PAH). These drugs operate by mimicking the action of prostaglandin I2, or PGI2, a naturally occurring compound in the body.
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
Acute Inflammation II: Local and Systemic Effects01:25

Acute Inflammation II: 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...
Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists01:18

Treatment for Pulmonary Arterial Hypertension: Endothelin Receptor Antagonists

Endothelins (ETs) are potent vasoactive peptides critical in the human body's various physiological and pathological processes. One of the most promising therapeutic strategies for treating pulmonary arterial hypertension (PAH) involves counteracting the effects of these endothelins using a class of drugs known as endothelin receptor antagonists.
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Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers01:26

Treatment for Pulmonary Arterial Hypertension: Receptor Tyrosine Kinase Inhibitors and Calcium Channel Blockers

Receptor tyrosine kinase inhibitors (TKIs) and calcium channel blockers (CCBs) are two critical categories of drugs employed in the treatment of pulmonary artery hypertension (PAH). PAH is a disease that causes high blood pressure in the pulmonary arteries, resulting in chest pain, fatigue, and shortness of breath.
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Treating Helicobacter pylori in Peptic Ulcers: Antimicrobial Therapy

Helicobacter pylori, a resilient gram-negative bacterium, can thrive in the stomach's harsh, acidic environment. Infection with H. pylori leads to a cascade of events within the stomach lining. One of the critical disruptions caused by this bacterium is the interference with somatostatin production, a hormone responsible for regulating acid secretion. This interference tips the balance, escalating acid secretion and diminishing bicarbonate levels. This imbalance compromises the defensive...

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Related Experiment Video

Updated: May 10, 2026

Clinical Application of Intense Pulsed Light Therapy and Radio Frequency for Treatment of Ocular Surface Diseases
07:36

Clinical Application of Intense Pulsed Light Therapy and Radio Frequency for Treatment of Ocular Surface Diseases

Published on: July 3, 2025

[Systemic therapy of rosacea].

M Schaller1, K Belge

  • 1Universitäts-Hautklinik, Eberhard-Karls-Universität, Liebermeisterstr. 25, 72076, Tübingen, Deutschland. martin.schaller@med.uni-tuebingen.de

Der Hautarzt; Zeitschrift Fur Dermatologie, Venerologie, Und Verwandte Gebiete
|June 14, 2013
PubMed
Summary
This summary is machine-generated.

Doxycycline is the primary rosacea treatment, but alternatives like azithromycin and metronidazole exist. Other therapies include retinoids, dapsone, beta blockers, ivermectin, and corticosteroids for specific rosacea types.

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Area of Science:

  • Dermatology
  • Pharmacology

Context:

  • Rosacea is a common chronic inflammatory skin condition.
  • Current treatment guidelines focus on managing symptoms and preventing flares.

Purpose:

  • To outline the established and alternative therapeutic options for various rosacea subtypes.
  • To provide a comprehensive overview of rosacea pharmacotherapy.

Summary:

  • Doxycycline is the sole authorized medication for rosacea, typically dosed at 40-100 mg daily for 3-6 months.
  • Alternative systemic therapies include azithromycin or metronidazole for non-responders or contraindications.
  • Retinoids (isotretinoin) are effective for sebaceous gland hyperplasia, dapsone for granulomatous rosacea and rosacea fulminans.
  • Beta blockers can reduce erythema; oral ivermectin is indicated for demodicosis.
  • Corticosteroids may be used for rosacea fulminans and granulomatous rosacea, while ophthalmic rosacea requires topical or systemic macrolides/tetracyclines.

Impact:

  • Informs clinical decision-making for rosacea management.
  • Highlights the diverse pharmacological approaches available for different rosacea presentations.