Intro/Approach to Derm Pt Flashcards
why are bumps/blemishes important findings on routine exam?
Need to be able to distinguish between between benign vs. malignant
MC compliants for skin lesions?
- rashes
- bumps
Generalized red rash with fever
- Viral Exanthems
- Rickettsial Exanthems
- Drug Eruptions
- Bacterial Infections
Generalized red rash with blisters and prominent mouth lesion
- Erythema multiforme (major)
- TEN
- Pemphigus
- Bullous pemphigoid
- Drug eruptions
Generalized red rash with pustules
- Pustular psoriasis
- Drug eruptions
Generalized rash with vesicles
- Disseminated herpes simplex
- Generalized herpes zoster
- Varicella
- Drug eruptions
Generalized red rash with scaling over whole body
Exfoliative erythroderma
Generalized wheals and soft tissue swelling
- Urticaria
- Angioedema
Generalized purpura
- Thrombocytopenia
- Purpura fulminans
- Drug eruptions
Generalized purpura that can be palpated
- Vasculitis
- Bacterial endocarditis
Multiple skin infarcts
- Meningococcemia
- Gonococcemia
- Disseminated intravascular coagulopathy
Localized skin infarcts
- Calciphylaxis
- Atherosclerosis obliterans
- Atheroembolization
- Warfarin necrosis
- Antiphospholipid antibody syndrome
Facial inflammatory edema with fever
- Erysipelas
- Lupus
- Dermatomyositis
Why should you examine first before history is taken as the initial approach?
For pt’s perspective
- diagnostic accuracy > when objective examination is approached w/o preconceived ideas
For a general skin exam, what are you looking at?
“Reading the skin” (SKIN, HAIR, NAILS)
- General - Examine ALL skin surfaces - undress patient when applicable
- Focused - Exam in area of concern
- Detailed - Examine the individual lesions
For an entire skin exam, what parts of the body are you looking at?
- Mucous membranes
- Genital and anal region
- Hair and nails
- Lymph nodes
- Reading the skin = reading text
Type of lesion
Color
Margination
Consistency
Shape
Arrangement
Distribution
how do you “Read the skin?”
- Type of lesion
- Color
- Margination
- Consistency
- Shape
- Arrangement
- Distribution
characteristics of describing a lesion?
- Location
- Onset
- Characteristic
- Aggravating factors
- Treatments
- Evolution
Types of lesions
- Macule
- Papule
- Plaque
- Nodule
- Wheal
- Vesicle or bulla
- Pustule
- Crusts
- Scales
- Erosion
- Ulcer
- Scar
- Atrophy
- Cyst
Flat, nonpalpable lesions usually < 10 mm in diameter
a change in color and are not raised or depressed compared to the skin surface.
Macules
A ____ is a large macule.
patch
Elevated lesions usually < 5 mm in diameter that can be felt or palpated
Papule
Ex: nevi, warts
Palpable lesions > 10 mm in diameter that are elevated or depressed compared to the skin surface.
may be flat topped or rounded
Plaque
Ex: psoriasis and granuloma annulare
Firm lesions that extend into the dermis or subcutaneous tissue. >5mm
Nodule
Ex: cysts, lipomas, and fibromas.
Small, clear, fluid-filled blisters < 10 mm in diameter.
Vesicles
Vesicles are characteric for what certain conditions?
herpes infections, acute allergic contact dermatitis, and some autoimmune blistering disorders.
Clear fluid-filled blisters > 10 mm in diameter. These may be caused by burns, bites, irritant or allergic contact dermatitis, and drug reactions.
Bulla
Classic autoimmune bullous diseases include pemphigus vulgaris and bullous pemphigoid.
Vesicles that contain pus.
Pustule
This lesion is common in bacterial infections and folliculitis and may arise in some inflammatory disorders including pustular psoriasis.
pustule
Wheals or hives are characterized by elevated lesions caused by localized edema.
pruritic and red
urticaria
common manifestation of hypersensitivity to drugs, stings or bites, autoimmunity, and, less commonly, physical stimuli including temperature, pressure, and sunlight.
Wheals
how long do urticarias last?
<24 h
Heaped-up accumulations of horny epithelium that occur in disorders such as psoriasis, seb derm, and fungal infections.
scale
Consist of dried serum, blood, or pus. can occur in inflammatory or infectious skin diseases (ex: impetigo).
Crusts
Open areas of skin that result from loss of part or all of the epidermis.
can be traumatic or can occur with various inflammatory or infectious skin diseases.
Erosions
a linear erosion caused by scratching, rubbing, or picking.
excoriation
Result from loss of the epidermis and at least part of the dermis
ulcers
Causes of this lesion include venous stasis dermatitis, physical trauma with or without vascular compromise (eg, caused by decubitus ulcers or peripheral arterial disease), infections, and vasculitis.
ulcer
Nonblanchable punctate foci of hemorrhage.
Petechiae
Causes include platelet abnormalities (eg, thrombocytopenia, platelet dysfunction), vasculitis, and infections (eg, meningococcemia, Rocky Mountain spotted fever, other rickettsioses).
Larger area of hemorrhage that may be palpable.
Purpura
Purpura may indicate a coagulopathy. Large areas of purpura may be called ecchymoses or, colloquially, bruises.
this lesion is considered the hallmark of leukocytoclastic vasculitis.
Palpable purpura
Thinning of the skin, which may appear dry and wrinkled, resembling cigarette paper.
atrophy
Atrophy may be caused by chronic sun exposure, aging, and some inflammatory and neoplastic skin diseases, including cutaneous T-cell lymphoma and lupus erythematosus.
this lesion is also may result from long-term use of potent topical corticosteroids
atrophy
Areas of fibrosis that replace normal skin after injury.
can become hypertrophic or thickened and raised.
scars
hypertrophic scars that extend beyond the original wound margin.
Keloids
Foci of small, permanently dilated blood vessels
may occur in areas of sun damage, rosacea, systemic diseases (especially systemic sclerosis), or inherited diseases (eg, ataxia-telangiectasia, hereditary hemorrhagic telangiectasia) or after long-term therapy with topical fluorinated corticosteroids.
Telangiectases
- Cavity containing liquid or solid or semisolid materials and it may be superficial or deep.
- Visual appears superficial and most often dome shaped
- skin colored, yellow, red or blue
cyst
What is the ABCDE checklist?
- Asymmetry
- border
- color
- diameter
- evolution
components of asymmetry/arrangement?
ABCDE
- Do these two sides match?
- What is the arrangement?
- Grouped or scattered?
Questions about border
ABCDE checklist
- Well defined or ill defined?
-Regular or irregular
Questions about color?
ABCDE checklist
- changing?
- multiple colors?
components of distribution/diameter
- Localized
- Generalized
- Linear
- Dermatomal
- Extensor
- Flexor
- Intertriginous
- Confluent
- Morbilliform
- Is it >6mm - HIGH RISK
questions about elevation/enlargement?
ABCDE checklist
- Is it elevated?
- Is the elevation regular or irregular? - Has the lesion grown or changed?
- How quickly?
Other things to consider when evaluating the shape while checking for ABCDE?
- Annular → ring
- Nummular → looks like coins
- Linear → straight line
- Polycyclic → incomplete rings coalescing
- Arcuate → arc shaped
- Reticular → lacy or net like
- Geographic → large and vary greatly with borders
- Serpiginous → wavy pattern
- Targetoid → resembles a target
- Whorled → marble like
How to evaluate the arrangement, patterns, and distribution of a lesion?
- Number - Single or multiple
- Arrangement
- Grouped
- Disseminated - Confluence - Yes or no
- Distribution
- Extent
— Isolated
— Localized
— Generalized
— Universal
- Pattern
— Symmetric
— Exposed areas
— Sites of pressure
— Intertriginous area
— Follicular localization
constitutional sx that are for acute illness?
- Headaches
- Chills
- Fever
- Weakness
Constitutional sx for chronic illness?
- Fatigue
- Weakness
- Anorexia
- Weight loss
- Malaise
components of the Hx of a skin lesion?
- When → onset
- Where → site of onset
- Does it itch or hurt → symptoms
- How has it spread → pattern
- How have individual lesions changed → evolution
- Provocative factors → heat, cold, sun, exercise, travel history, drug ingestion, pregnancy, season
- Previous treatment → topical or systemic
PMHx of a derm pt
- Surgeries
- Illnesses - Hospitalizations
- Allergies - Especially drug allergies
- Medications - Present and past
- Habits - Smoking, alcohol, drug abuse
- Atopic history - Asthma, hay fever, eczema
- FHx - Derm related and non derm related
- Social history - Occupation, Hobbies, Exposures, Travel, IVDU
- Sexual history
- At risk for HIV - Blood transfusions, IVDU, Sexually active/multiple partners, STD history - Standard ROS
What is the fitzpatrick Skin Type Scale
what is a Dermoscopy
hand lens with built in lighting and magnification
what is a diascopy?
firmly pressing a glass slide over lesion to determine capillary dilation (erythema) or blood extravasation (purpura)
What is a woods lamp?
UV long wave light (black light)
what is a biopsy/what types?
shave/punch/excisional