Related Experiment Video
Updated: Oct 6, 2025

Intradermal Inoculation of Mycobacterium avium in the Mouse Ear
Published on: July 3, 2025
Tinea auricularis: a neglected tinea incognito
Hui-Lin Zhi1, Xiu-Jiao Xia1, Ze-Hu Liu1
1Department of Dermatology, Hangzhou Third People's Hospital, Affiliated Hangzhou Dermatology Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Ultraviolet dermoscopy offers a quick, noninvasive method for diagnosing Microsporum canis-induced tinea auricularis. This diagnosis enables prompt treatment with systemic antifungals, improving patient outcomes.
Area of Science:
- Dermatology
- Mycology
- Medical Imaging
Background:
- Tinea auricularis, a fungal infection of the ear canal, can be challenging to diagnose.
- Microsporum canis is a common dermatophyte causing superficial fungal infections.
- Traditional diagnostic methods may be time-consuming or invasive.
Discussion:
- Ultraviolet (UV) dermoscopy provides a rapid, noninvasive visualization of fungal infections.
- Specific fluorescence patterns under UV light aid in identifying Microsporum canis.
- Early diagnosis is crucial for effective management of tinea auricularis.
Key Insights:
- UV dermoscopy accurately identifies tinea auricularis caused by Microsporum canis.
- The technique facilitates timely initiation of systemic antifungal therapy.
- Noninvasive nature enhances patient comfort and compliance.
Outlook:
- UV dermoscopy could become a standard tool for diagnosing superficial mycoses.
- Further research may explore its utility in other dermatological conditions.
- Integration into routine clinical practice can improve diagnostic workflows.
Related Concept Videos
Skin Diseases and Disorders
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
Reticular Dermis
Reticular Layer
Underlying the papillary layer is the much thicker reticular layer, composed of dense, irregular connective...
Papillary Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen...
Accessory Structures of the Skin: Nails
The main components of a nail include the following.
Nail Plate: The nail plate is the visible portion of the nail that extends beyond the fingertips or toes. It is a hard, translucent...
Fungal Phylum Ascomycota
Endocarditis II: Clinical Features of Infective Endocarditis

