Pityriasis Rosea
- Preceded by Upper Respiratory Tract Infection
- Single "Herald Patch"
- "Christmas Tree" Distribution
- Plaques with Collarette Scale
- Self-resolving in 6-8 Weeks
Pityriasis Versicolor (Tinea versicolor)
- Lipid-Dependent Fungus
- Fatty Acids Damage Melanocytes
- Malassezia Furfur
- Hot, Humid Weather
- Hypopigmentation
- Hyperpigmented Patches
- Spaghetti and Meatball Appearance on KOH Prep
- Fragmented Hyphae with Clusters of Yeast
- Topical or Oral Antifungals
- Selenium Sulfide
- Zinc
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
Streptococcus Pyogenes Disease
- Pyogenic
- Pyogenic Pharyngitis
- Impetigo
- Cellulitis
- Toxigenic
- Toxic Shock-Like Syndrome
- Scarlet Fever
- Sandpaper Rash
- Strawberry Tongue
- Immunologic
- Rheumatic Fever
- Antibodies to M Protein
- Acute Glomerulonephritis (Post Streptococcal Glomerulonephritis)
Sporothrix Schenckii
- Fungi
- Thermally Dimorphic
- Cigar-shaped Yeast Forms
- Rose Thorn Prick
- Packaging Peat Moss
- Local Pustule or Ulcer
- Nodules on Draining Lymphatics
- Potassium Iodide
- Itraconazole
Scabies
- Sarcoptes Scabiei Mite
- Pruritus
- Papules with Burrows
- Webs of Fingers and Toes
- Axilla and Nipples
- Skin Scraping
- Dermoscopy
- Mites and Eggs on Magnification
- Permethrin Cream
- Oral Ivermectin
- Lindane Cream
- Wash All Linens In Hot Water
Verrucae
- Warts
- Papillary Cauliflower Like Growths
- Low-Risk Human Papillomavirus
- Epidermal Hyperplasia and Hyperkeratosis
- Koilocytes
- No Treatment Needed
- Topical Salicylic Acid
- Cryotherapy
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
- Edema Extending Beyond Erythema
- Crepitus
- Pain Out of Proportion (POOP)
- Anesthesia Over Affected Area (Late Finding)
Necrotizing Fasciitis Diagnosis and Treatment
- Usually a Clinical Diagnosis
- Soft Tissue Gas On CT
- Emergent Surgical Debridement
- Vasopressors and Fluids
- IV Immune Globulin If Strep Toxic Shock Syndrome
- Carbapenem Or Piperacillin-Tazobactam
- PLUS Clindamycin
- PLUS MRSA Coverage
Erythema Multiforme
- Type IV Hypersensitivity Reaction
- HSV
- Mycoplasma Pneumoniae
- Drugs
- Targetoid Lesions
- Symmetrical Distribution
- EM Minor: Mild Symptoms
- EM Major: Mucosal Involvement
- Self-Limiting
Impetigo
- Transmission
- Incubation
- Non-Bullous
- Bullous
- Clinical Presentation
- Antibiotics
- Hygiene
- Return to Work or School
- Post-streptococcal Glomerulonephritis
- Rheumatic Fever
- Staphylococcal Scalded Skin Syndrome