Related Experiment Video
Updated: Jun 22, 2026

Clinical Application of Intense Pulsed Light Therapy and Radio Frequency for Treatment of Ocular Surface Diseases
Published on: July 3, 2025
Red ear syndrome and auricular erythromelalgia: the same condition?
1Department of Dermatology, J.W. Goethe-University, Frankfurt, Germany. thomas.brill@kgu.de
Red ear syndrome (RES) involves recurrent ear redness and burning. This case highlights the diagnostic challenge distinguishing RES from erythromelalgia, particularly in pediatric patients.
Area of Science:
- Neurology
- Dermatology
Background:
- Red ear syndrome (RES) is characterized by recurrent episodes of unilateral ear redness, heat, and burning pain.
- The etiology of RES remains unclear, with potential links to trigeminal autonomic cephalalgias.
Observation:
- A 7-year-old boy presented with a 3-year history of recurrent episodes of unilateral ear redness, swelling, burning sensation, and local hyperthermia.
- The patient's symptoms mimicked both RES and erythromelalgia, a condition known to present with auricular variants.
Findings:
- The clinical presentation posed a diagnostic challenge, necessitating differentiation between RES and erythromelalgia.
- Similarities in symptoms like localized redness, heat, and burning sensation complicate the differential diagnosis.
Implications:
- This case underscores the importance of considering both RES and auricular erythromelalgia in the differential diagnosis of unilateral red ear.
- Further research is needed to elucidate the distinct pathophysiological mechanisms underlying these conditions and refine diagnostic criteria.
Related Concept Videos
Rheumatic Heart Disease I: Introduction
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies
Endocarditis II: Clinical Features of Infective Endocarditis
Disorders of Erythrocytes
Erythrocyte disorders can be broadly categorized into two main types: anemic and polycythemic conditions.
A low oxygen-carrying capacity of the blood due to the loss, lower production, or destruction of erythrocytes is termed anemia. Hemorrhagic anemia, for example, occurs when bleeding from an external wound or internal ulcer reduces erythrocyte counts.
On the other...
Myocarditis II: Clinical Features and Diagnostic Tests
Assessment of apical radial pulse
The A-R pulse assessment involves simultaneous evaluation of the apical and radial pulses. When the apical and radial pulse rates vary, this assessment helps identify a pulse deficit.
Pre-Procedural Preparation

