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Dermoscopy and Trichoscopy in Diseases of the Brown Skin: Atlas and Short Text
Uday S Khopkar
BASICS
1:
Principles and Technique of Dermoscopy and Videodermoscopy
Introduction
Principles of Dermoscopy
Parts of a Dermoscope
Technique
Conclusion
2:
Dermoscopy: Applications and Patterns in Diseases of the Brown Skin
Applications of Dermoscopy
Dermoscopic Patterns
Importance of Light Source in a Dermoscope
3:
Choosing a Dermoscopy Instrument for Your Practice: An End-user's Perspective
Introduction
Pros and Cons of a Handheld Dermoscope
Pros and Cons of Videodermoscope
Other Options
Handheld Videodermoscopes
Dermoscopy without a Dermoscope
Dermoscopy Cameras
Handheld Dermoscopes
Videodermoscopes
HYPERPIGMENTATION DISORDERS
4:
Melasma
Histopathology
Pigmentary Features of Normal Skin Seen through a Dermoscope
Dermoscopy of Melasma
Role of Dermoscopy in Melasma
Differential Diagnosis of Melasma
Post-inflammatory Hyperpigmentation
Solar Lentigines, Ephelides
Lichen Planus Pigmentosus
Frictional Melanosis
Acquired Bilateral Nevus of Ota–like Macules (Hori's nevus), and Nevus of Ota
Lentigo Senilis
Conclusion
5:
Importance of Dermatoscopy in Diagnosing Exogenous Ochronosis
Introduction
Dermoscopy
Conclusion
6:
Pigmented Purpuric Dermatoses
Introduction
Clinical Need of Dermoscopy
Common Dermoscopic Observations in PPD4
Dermoscopic Findings and Histopathologic Correlation with Evolution of Lesions of PPD4
How PPD is differentiated from other skin conditions on dermoscopy?
Limitations
Conclusion
7:
Becker's Nevus vs Café-au- lait Macules (CALMs): A Dermoscopic Analysis
Introduction
Dermoscopic Findings of Becker's Nevus
Center of the Lesions
Periphery of the Lesions
Dermoscopy of CALMs
Summary
HYPOPIGMENTED DISORDERS
8:
Dermoscopy: A Tool to Assess Stability in Vitiligo
9:
Dermoscopy in the Differentiation of Idiopathic Guttate Hypomelanosis (IGH) and Guttate Vitiligo
Introduction
Need for Dermoscopy
Dermoscopic Patterns
Synthesis and Unanswered Questions
10:
Dermoscopy: Differentiating Evolving Vitiligo from a Hypopigmented Patch of Leprosy
Dermoscopic Findings
In White Light Mode
In Polarized Light Mode
In Ultraviolet Light Mode
Correlation of Dermoscopic Findings
Conclusion
INFLAMMATORY SKIN DISEASES
11:
Dermoscopy of Lichen Planus
Introduction
Purpose of Dermoscopy in LP
Dermoscopic Findings in LP2-4
Active LP
Mature Papules and Plaques
Long-standing Lesions
Resolving Lesions (Pigmented Lesions of LP)
Hypertrophic Lichen Planus
Histopathological Correlation
Vascular Structures
Nonvascular Structures
Differential Diagnosis of Lichen Planus: Dermoscopic Solution
Chronic Plaque Psoriasis
Lichenoid Drug Eruption
Lupus Erythematosus
Pityriasis Rosea
Conclusion
12:
Lichen Planus Pigmentosus vs Ashy Dermatosis—Through a Dermoscope
Dermoscopy
Ashy Dermatosis
Face
Extremities
Lichen Planus Pigmentosus
Face
Extremities
13:
Psoriasis
Introduction
Need for Dermoscopy
Dermoscopic Patterns
Plaque Psoriasis
Nail Psoriasis
Scalp Psoriasis
Psoriasis and Dry Nummular Eczema
14:
Nailfold Capillaroscopy in Connective Tissue Diseases
Historical Background
Need for Nail Fold Capillaroscopy (NC) in Connective Tissue Diseases (CTDs)
Pathogenesis
Capillaroscopic Microvascular Morphology in RP
Scleroderma Pattern
Capillaroscopy Pattern in Various CTDs
Conclusion
TRICHOSCOPY
15:
Overview of Trichoscopy
Introduction
Clinical Need for Trichoscopy
Descriptive Terms in Trichoscopy
Dermoscopic Observations and Correlation
Alopecia Areata
Androgenetic Alopecia
Telogen Effluvium
Trichorrhexis Nodosa
Monilethrix
Lichen Planopilaris
Traumatic Alopecia
Tinea Capitis
Discoid Lupus Erythematosus
Conclusion
16:
Trichoscopy of Patchy Alopecia
Trichoscopy of Patchy Non-scarring Alopecias
Alopecia Areata
Purpose of Dermoscopy for Patchy Alopecia
Dermoscopic Findings of Alopecia Areata
Yellow Dots
Short Vellus Hair
Exclamation Hair (Tapering Hair) and Black Dot and Broken Hair Shaft
Tinea Capitis
Purpose of Dermoscopy for Tinea Capitis
Dermoscopy Findings in Tinea Capitis
Broken Hair Shaft
Comma Hair
Blotchy Pigmentation
Trichotillomania (Hair Pulling Tic)
Purpose of Dermoscopy for Trichotillomania
Dermoscopic Findings in Trichotillomania6
Fractured Hair Shafts of Varying Lengths
Frayed Hair Shafts with Split Ends
Coiled Hair Shafts
Other Dermoscopic Findings
Conclusion
Trichoscopy of Patchy Scarring Alopecias
Lichen Planopilaris
Purpose of Dermoscopy in LPP
Dermoscopic Features of LPP
Peripilar Cast and Follicular Plugging
Perifollicular Pigmentation and Pigment Network in Interfollicular Area
White Dots
Discoid Lupus Erythematosus (DLE)
Purpose of Dermoscopy in DLE
Dermoscopic Features of DLE
Loss of Pigment Network (Fig. 16.13)
Increased Vascularization (Fig. 16.13)
Hyperkeratotic Follicular Plugging (Fig. 16.14)
Brown Dots in the Interfollicular Area
17:
Computerized Hair Imaging and Analysis to Measure Hair Loss and Growth
Computerized Trichoscopy—A New Technology
18:
Phototrichogram and TrichoScan©
Phototrichogram
Procedure
Clipping of Hair
Hair Diameter Measurement
Image Recording
Hair Variables at t0 (Fig. 18.6A)
Hair Variables at t2 (Fig. 17.6B)
Contrast-enhanced Phototrichogram
TrichoScan© (TRICHOLOG GmbH)
19:
Benign Pigmented Lesions of the Skin
Conceptual Understanding of the Various Dermoscopic Features and Patterns
20:
Dermoscopy in Clinical Practice: Using Your iPhone for Dermoscopy
21:
Keratosis Pilaris: More than Just a Follicular Keratosis
Dermoscopic Features of Keratosis Pilaris
Alternative Pathogenetic Hypothesis and Treatment Implications
22:
Dermoscopy Sans Dermoscope: For Everyday Clinical Use
Introduction
Dermoscopy without a Dermoscope
Conclusion
23:
Porokeratosis
Clinical Need for Dermoscopy
Dermoscopic Features seen in Porokeratosis
24:
Genodermatoses
Nevoid Basal Cell Carcinoma Syndrome
Dowling Degos Disease
25:
Dermoscopic Diagnosis of Diabetic Dermopathy: A Skin Marker of Diabetic Microangiopathy
INDEX
TOC
Index
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