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Related Concept Videos

Skin Diseases and Disorders01:23

Skin Diseases and Disorders

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Skin is the first line of defense and encounters a variety of microbes. Some pathogenic strains are often the cause of a broad range of infections of the skin and other body systems. These conditions can affect people of all ages and may have different causes, including genetic factors, infections, autoimmune reactions, environmental factors, and lifestyle choices.
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...
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Skin Cancer01:30

Skin Cancer

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Skin cancer is a type of cancer that occurs when there is an abnormal growth of skin cells, usually triggered by damage to the DNA within the skin cells. It is primarily caused by exposure to ultraviolet (UV) radiation from the sun or artificial sources like tanning beds. Skin cancer is the most common type of cancer worldwide, and its incidence continues to rise.
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
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Papillary Dermis01:11

Papillary Dermis

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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...
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Reticular Dermis01:15

Reticular Dermis

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The papillary and reticular dermis are the two layers of the dermis. They are made of connective tissue with fibers of collagen extending from one to the other, making the border between the two somewhat indistinct. The dermal papillae extending into the epidermis belong to the papillary layer, whereas the dense collagen fiber bundles below belong to the reticular layer.
Reticular Layer
Underlying the papillary layer is the much thicker reticular layer, composed of dense, irregular connective...
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Role of Skin in Vitamin D Synthesis01:23

Role of Skin in Vitamin D Synthesis

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The skin plays a crucial role in the synthesis of vitamin D, a vital nutrient for various physiological processes in the body. Vitamin D is unique because it can be synthesized in the skin through a series of chemical reactions triggered by exposure to ultraviolet B (UVB) radiation from sunlight.
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin...
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Cells of the Epidermis01:24

Cells of the Epidermis

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The epidermis is made of four or five layers of epithelial cells, depending on its location in the body. From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum.
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Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
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Dermatophytoses in Davangere.

K Siddappa, O A Mahipal

    Indian Journal of Dermatology, Venereology and Leprology
    |February 15, 2017
    PubMed
    Summary

    This dermatophytosis study found infections common in adults aged 11-50, particularly men. Trichophyton rubrum was the most frequent fungal species identified, highlighting key aspects of fungal skin infections.

    Area of Science:

    • Medical Mycology
    • Dermatology
    • Infectious Diseases

    Background:

    • Dermatophytoses are common superficial fungal infections affecting the skin, hair, and nails.
    • Understanding the epidemiological characteristics and etiological agents of dermatophytoses is crucial for effective public health management and treatment strategies.

    Purpose of the Study:

    • To conduct a mycological investigation of dermatophytosis cases.
    • To analyze the age and sex incidence, clinical variations, and seasonal trends of dermatophytosis.
    • To identify the predominant dermatophyte species causing infections.

    Main Methods:

    • A retrospective analysis of 130 cases of dermatophytosis over one year.
    • Direct microscopic examination for initial diagnosis.

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  • Fungal culture for species identification from positive cases.

    • Main Results:

    • Infections were most prevalent in the 11-50 age group, with a higher incidence in males.
    • Tinea glabrosa was the most common clinical presentation (89.24%), followed by tinea capitis (6.93%).
    • Trichophyton rubrum was the predominant etiological agent isolated in 81.82% of cultured cases, followed by Epidermophyton floccosum (9.09%).

    Conclusions:

    • Dermatophytosis affects a broad adult age range, with a notable predilection for males.
    • Tinea glabrosa is the leading clinical form, and Trichophyton rubrum is the primary causative species in this study cohort.
    • These findings underscore the importance of accurate mycological diagnosis for targeted treatment of fungal skin infections.