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Matthew Shared "Derm 1" - 34 Picmonics

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Derm 1

Pemphigus Vulgaris
Pathophysiology
Autoantibodies against desmosomes
Symptoms
Flaccid Bullae on Skin
Oral Mucosa Involvement
Intraepidermal Acantholysis
Fluid Loss
Infection
Nikolsky Positive
Diagnosis
Biopsy showing Autoantibodies
Treatment
IVIG and Plasmapheresis
Oral Steroids
Immunosuppressants
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2 mins
Bullous Pemphigoid
Linear Deposits of IgG
Affects Hemidesmosomes
Epidermal Basement Membrane
Tense Blisters on Skin
Nikolsky Negative
Contain Eosinophils
Rarely Affect Oral Mucosa
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2 mins
Vitiligo
Pathophysiology
Autoimmune Destruction of Melanocytes
Presentation
Hypopigmentation
Acral Areas and Around Orifices
Diagnosis
Clinical Presentation + Woods Lamp
Risk Factors
Other Autoimmune Diseases
Treatment
Glucocorticoids
Tacrolimus
Phototherapy
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2 mins
Necrotizing Fasciitis Diagnosis and Treatment
Diagnosis/Workup
Usually a Clinical Diagnosis
Soft Tissue Gas On CT
Management
Emergent Surgical Debridement
Vasopressors and Fluids
IV Immune Globulin If Strep Toxic Shock Syndrome
Antibiotic Regimen
Carbapenem Or Piperacillin-Tazobactam
PLUS Clindamycin
PLUS MRSA Coverage
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4 mins
Necrotizing Fasciitis Pathophysiology and Characteristics
Bacterial Infection of Muscle Fascia and Subcutaneous Fat
Polymicrobial or Monomicrobial
Polymicrobial: Anaerobe + Gram Negative Enterobacteriaceae
Monomicrobial: Group A Streptococcus or Staph Aureus
Clinical Manifestations
Edema Extending Beyond Erythema
Crepitus
Pain Out of Proportion (POOP)
Anesthesia Over Affected Area (Late Finding)
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5 mins
Streptococcus pyogenes Characteristics
Characteristics
Group A Streptococci (GAS)
Gram-Positive
Cocci
Beta-Hemolytic
Catalase-Negative
Bacitracin-Sensitive
Hyaluronic Acid Capsule
Streptolysin O
DNase
Streptokinase
Exotoxin A
Pyrrolidonyl Arylamidase (PYR) Positive
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2 mins
Streptococcus Pyogenes Disease
Pyogenic
Pyogenic
Pyogenic Pharyngitis
Impetigo
Cellulitis
Toxigenic
Toxic Shock-Like Syndrome
Scarlet Fever
Sandpaper Rash
Strawberry Tongue
Immunologic
Immunologic
Rheumatic Fever
Antibodies to M Protein
Acute Glomerulonephritis (Post Streptococcal Glomerulonephritis)
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2 mins
Staphylococcus aureus Characteristics
Characteristics
Gram-Positive
Cocci
Catalase-Positive
Coagulase-Positive
Beta-Hemolytic
Protein A Virulence Factor
Inhibits Phagocytosis
MRSA
Resistant to Beta Lactams Due to Altered Penicillin Binding Proteins (PBPs)
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2 mins
Staphylococcus aureus Disease
Skin Infections
Impetigo
Abscesses
Exfoliative Toxin
Scalded Skin Syndrome
Toxic Shock Syndrome (TSST 1)
Binds to MHC II and T Cell Receptor
Food Poisoning
Acute Bacterial Endocarditis
Pneumonia
Osteomyelitis
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2 mins
Atopic Dermatitis / Eczema
Presentation
Pruritic Vesicles
Inflammatory Skin Rash
Cheeks in Children
Skin Flexural Areas
Associated with Asthma and Allergic Rhinitis
Treatment
Tacrolimus
Moisturizers
Corticosteroids
Phototherapy
Avoid Triggers
Antihistamines
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2 mins
Psoriasis
Presentation
Epidermal Hyperproliferation Keratinocytes
Defined Red Salmon Plaques
Silvery Scales
Extensor Surfaces
Bleeding when Removed
Auspitz Sign
Pruritus
Nail Changes
Histological Finding
Munro Microabscesses
Nucleated Cells in Stratum Corneum
Treatment
Retinoids
Topical Corticosteroids
Tar
Immunosuppressants
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2 mins
Anti-desmoglein Antibodies
Pemphigus Vulgaris
Flaccid Blisters
Skin and Oral Mucosa
Positive Nikolsky's Sign
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59 secs
Actinic Keratosis
Sun Exposure
Papules or Plaques
Small, Rough
Erythematous
Precursor to Squamous Cell Carcinoma
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53 secs
Acne Vulgaris Presentation and Pathophysiology
Presentation
Papules/Comedones in Mild Cases
Blackheads Open, Whiteheads Closed
Pustules in Mild-Moderate Cases
Nodules/Cysts in Severe Cases
Pathophysiology
Inflammation at Hair Follicle/Sebaceous Gland
Increased Androgens
Colonization by Cutibacterium Acnes
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3 mins
Tinea (Dermatophytes): General Characteristics And Management
Fungal Cutaneous Infection
Organisms
Trichophyton
Microsporum
Epidermophyton
Clinical Features
Pruritic Rash
Segmented Hyphae On KOH
Management
Topical Azole
Terbinafine For Tinea Unguium (Nails)
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2 mins
Skin Assessment
Inspect the skin
Observe for Abnormal Skin Pigmentation
Inspect for Cyanosis
Observe Skin for Pallor
Observe for Jaundice
Inspect for Erythema
Palpate the Skin
Check the Temperature
Observe the Skin for Moisture
Inspect for Diaphoresis or Dehydration
Check skin for edema
Imprint Thumb Firmly for 3 to 4 Seconds
Look for lesions
Note the Characteristics
Palpate Lesion
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4 mins
Rosacea
Characteristics
Episodes Provoked by Alcohol, Heat, or Emotions
Erythematotelangiectatic Rosacea
Facial Flushing and Telangiectasias
Sun Protection
Topical Brimonidine
Papulopustular Rosacea
Papules and Pustules
Topical Metronidazole
Phymatous Rosacea
Rhinophyma
Laser Ablation
Considerations
Avoid Triggers
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2 mins
TNF-Alpha Inhibitor Drugs and Complications
Etanercept
Decoy TNF- Alpha receptor
Anti-TNF- Alpha antibody
Adalimumab
Infliximab
Complications
Increased risk of infection
Predispose to Tuberculosis (TB) reactivation
Order Baseline PPD- skin test
Quantiferon Gold In-Tube
Order Chest X-Ray
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2 mins
TNF-Alpha Inhibitors Overview
Mechanism
Downregulates Pro-inflammatory Cytokines
Decreased Lymphocyte Activation and Migration
Granuloma Breakdown
Treats
Crohn's Disease
Rheumatoid Arthritis
Juvenile Rheumatoid Arthritis
Psoriasis
Ankylosing Spondylitis
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1 min
Staphylococcus epidermidis
Characteristics
Cocci
Gram-Positive
Catalase-Positive
Urease-Positive
Coagulase-Negative
Novobiocin-Sensitive
Component of Normal Skin Flora
Infects Prosthetic Devices and IV Catheters
Contaminates Blood Cultures
Produces Adherent Biofilms
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2 mins

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Matthew Shared Derm 1 - 34 Picmonics