← All decks
Dermatology
Basic Principles of Dermatology
Built from Dermatology, 5th Edition
What’s inside
2 sections · 124 slides
Introduction to Clinical Dermatology
How dermatologists classify, describe, and reason through skin disease
- What dermatology studies
- Why dermatologists read skin disease so well
- A classification tree for skin disease
- The first branch point in classification
- A neoplasm that mimics inflammation
- An inflammatory disease that mimics a neoplasm
- Morphology: the shared vocabulary of skin lesions
- Primary versus secondary morphologic terms
- Primary lesions - morphological terms
- Macule
- Macule: clinical example
- Patch
- Patch: clinical example
- Papule
- Papule: clinical example
- Plaque
- Plaque: clinical example
- Plaque: a dermal-type example
- Plaque: dermal type, clinical example
- Nodule
- Nodule: clinical example
- Wheal
- Wheal: clinical example
- Vesicle
- Vesicle: clinical example
- Bulla
- Bulla: clinical example
- Pustule
- Pustule: clinical example
- Primary lesions: clinical features
- Primary lesions: clinical features (continued)
- Primary lesions: clinical features (continued)
- Primary lesions: clinical example
- Primary lesions: associated disorders
- Primary lesions: associated disorders (continued)
- Primary lesions: associated disorders (continued)
- Same morphology, different cause
- Secondary features - morphological terms
- Crust
- Scale
- Fissure
- Excoriation
- Erosion
- Erosion: clinical example
- Ulceration
- Ulceration: clinical example
- Infarct
- Atrophy
- Lichenification
- Secondary features: description
- Secondary features: description (continued)
- Secondary features: description (continued)
- Secondary features: clinical example
- Secondary features: disorders
- Secondary features: disorders (continued)
- Secondary features: disorders (continued)
- Palpation: touch as a diagnostic tool
- Non-palpable lesions
- Palpable lesions
- Palpation can reveal a subtle disease
- Use of palpation in defining cutaneous lesions
- Palpation of cutaneous lesions
- Atrophy: three subtypes felt on palpation
- Atrophy as a palpation clue
- Colour as a diagnostic clue
- Colour clue: Pink to red
- Colour clue: Black
- Colour clue: Blue
- Colour clue: Brown
- Colour clue: Gray
- Colour clue: Purple
- Colour clue: White
- Colour clue: Green
- Colour clue: Orange-red
- Colour clue: Yellow
- Colour as a clue to the clinical diagnosis
- Colour as a clue to the clinical diagnosis (continued)
- Colour as a clue to the clinical diagnosis (continued)
- Skin colour varies across the population
- Fitzpatrick scale of skin phototypes
- What sets skin colour
- Pigmentation shapes which findings you'll see
- Physical differences beyond colour
- Erythema is harder to see in darker skin
- Reaction and distribution patterns in darker skin
- Configuration and distribution
- Named configuration patterns
- Retiform purpura and skin necrosis
- Linear configuration patterns
- Clinical entities that commonly display the Koebner phenomenon
- Koebner phenomenon: trauma creates new lesions
- An exogenous shape gives away the cause
- Distribution: where lesions favour the body
- Major distribution patterns
- Major distribution patterns (continued)
- Seborrheic and photo-distribution
- Locus minoris resistentiae and Wolf isotopic response
- Wood's lamp examination of the skin
- Wood's lamp examination of the skin (continued)
- Wood's lamp: an augmented examination tool
- Temporal course: how a lesion changes over time
- Clues that time a lesion
- Diseases with a typically acute onset
- Approach to fever with a rash
- No single technique tells the whole story
The Role of Dermatopathology in Clinicopathologic Correlation
Why the biopsy and the bedside exam must be read together
- Two views of one disease
- Reasons to perform a skin biopsy
- A biopsy is a process, not just a cut
- Choosing the biopsy site
- Site selection: special situations
- Getting a good sample without distorting it
- Choosing a skin biopsy technique
- Four cutaneous biopsy techniques
- Superficial shave biopsy
- Deep shave (saucerization) biopsy
- Curettage
- Punch biopsy
- Incisional and excisional biopsy
- Optimizing a biopsy: where and when
- Optimizing a biopsy: preferred technique
- Optimizing a biopsy: pitfalls
- Optimizing a biopsy: ancillary techniques
- Key takeaways
- Dermatology, 5th Edition (2-Volume Set)