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Mitchell Shared "Derm Bugs" - 23 Picmonics

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Derm Bugs

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
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
Pasteurella multocida
Bacteria Characteristics
Gram-Negative
Coccobacilli
Charcoal Yeast with Iron and Cysteine
Zoonotic - Cats and Dogs
Signs & Symptoms
Cellulitis
Osteomyelitis
Septic Arthritis
Treatment
Amoxicillin-clavulanate
Intravenous Antibiotics for Invasive Disease
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2 mins
Mycobacterium leprae
Characteristics
Acid-Fast
Aerobic
Likes Cool Temperature
Diagnosis by Skin Biopsy or PCR
Lepromatous Leprosy
Th2 Response
Leonine Facies
Tuberculoid Leprosy
TH1 Response
Hypoesthetic Skin Plaques
Granulomatous Response
Treatment
Dapsone
Rifampin
Clofazimine
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2 mins
Bacillus Anthracis (Anthrax) Disease
Signs and Symptoms
Cutaneous
Painless Black Eschar (Necrotic Lesion)
Pulmonary
Mediastinal Widening
Rapidly Fatal
Woolsorter's Disease
Gastrointestinal
Consuming Anthrax-infected Meat
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2 mins
Bacillus Anthracis (Anthrax) Characteristics
Characteristics
Gram-Positive
Spore-Forming
D-glutamate Polypeptide Capsule
Protective Antigen
Lethal Toxin
Edema Factor
Increased cAMP
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1 min
Mumps Virus
Characteristics
Paramyxovirus
Signs and Symptoms
Parotitis
Increased Serum Amylase
Orchitis
Oophoritis
Aseptic Meningitis
Pancreatitis
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59 secs
Rubeola Virus
Characteristics
RNA Virus
Paramyxovirus
Signs and Symptoms
Measles
Rash Spreads From Head to Toe
Koplik Spots First
Red Spots with Blue-White Center on Buccal Mucosa
Cough
Coryza
Conjunctivitis
Subacute Sclerosing Panencephalitis
Giant Cell Pneumonia in Immunosuppressed Patients
Warthin-Finkeldey Multinucleated Giant Cells
Treatment
Vitamin A
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3 mins
Rubella
Characteristics
RNA Virus
Matonaviridae
Enveloped
Icosahedral
SS Positive Linear
Signs and Symptoms
German Measles or Three-Day Measles
Fever
Postauricular Tenderness
Lymphadenopathy
Truncal Rash
Arthritis
Congenital TORCH Infection
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2 mins
Varicella Zoster Virus (VZV)
Herpesvirus 3
Characteristics
Enveloped
Double Stranded DNA
Signs and Symptoms
Chickenpox
Pneumonia
Encephalitis
Trigeminal and Dorsal Root Ganglia
Shingles
Diagnosis
Tzanck Test
Multinucleated Giant Cells
Cowdry A Inclusion
Treatment
Acyclovir
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2 mins
Roseola
Exanthem
Herpesvirus 6
Enveloped
Double Stranded DNA
Linear
Signs and Symptoms
High Fevers Can Lead to Seizures
Diffuse Macular Rash After Fever
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1 min
Varicella (Chickenpox)
Mechanism
Varicella Zoster Virus (VZV)
Signs and Symptoms
Red Maculopapular Rash
Vesicles Ooze and Crust
Pruritus
Centripetal
Considerations
Varicella Immunization
Skin Care to Minimize Itching
Isolate until Vesicles Crust
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2 mins
Herpes Zoster (Shingles)
Cause/Mechanism
Varicella-Zoster Virus
Assessment
Linear, Unilateral Rash Along a Dermatome
Pruritus
Postherpetic Neuralgia
Interventions
Acyclovir
Analgesics
Gabapentin
Considerations
Contagious Vesicles
Shingrix
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3 mins
Parvovirus B19
Characteristics
DNA
Single Stranded
Linear
Smallest DNA virus
Non-enveloped
Signs and Symptoms
5th Disease
Slapped Cheek Rash in Children
Erythema Infectiosum
Hydrops Fetalis
RBC aplasia
Arthritis in Adults
Aplastic Crisis in Sickle Cell
Myocarditis
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2 mins
Erythema Infectiosum (Fifths Disease)
Mechanism
Human Parvovirus B19
Signs and Symptoms
Cold-like Symptoms
Three Stage Rash
Slapped Face
Maculopapular Red Spots on Trunk
Rash Reappears
Considerations
Aplastic Crisis
Joint Pain and Swelling
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2 mins
Exanthema Subitum (Roseola Infantum)
Mechanism
Human Herpesvirus Type 6
Signs and Symptoms
Sudden High Fever
Maculopapular, Nonpruritic Rash
Considerations
Febrile Seizures
Tepid Baths
Ibuprofen
Acetaminophen
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2 mins
Coxsackievirus
Characteristics
Picornavirus
Signs and Symptoms
Coxsackie A
Febrile Pharyngitis
Hand, Foot, and Mouth Disease
Most Common Cause of Aseptic Meningitis
Late Summer
Coxsackie B
Myocarditis
Dilated Cardiomyopathy
Type 1 Diabetes
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2 mins
Pityriasis Versicolor (Tinea versicolor)
Mechanism
Lipid-Dependent Fungus
Fatty Acids Damage Melanocytes
Malassezia Furfur
Hot, Humid Weather
Signs and Symptoms
Hypopigmentation
Hyperpigmented Patches
Diagnosis
Spaghetti and Meatball Appearance on KOH Prep
Fragmented Hyphae with Clusters of Yeast
Treatment
Topical or Oral Antifungals
Selenium Sulfide
Zinc
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4 mins
Seborrheic Dermatitis
Etiology
Parkinson's Disease
Malassezia Species
Signs & Symptoms
Yellow Scaly Rash
Cradle Cap
Treatments
Topical Antifungals
Corticosteroids
Emollients in Infants
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2 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

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