Dermatology Flashcards
A lesion type that changes over time
Secondary Skin Lesion
Definition: Visible accumulation of purulent fluid under skin
Pustule
Definition: Accumulation of serous fluid under the skin
Vesicle
Definition: Elevation of Skin
Plaque
Definition: A flat discolorated area of the skin that may have a different texture as well
Macule
Definition: A Macule that is > 1cm
Patch
Definition: A solid, small elevated lesion
Papule
Definition: “Blister” Elevation on epidermis filled with fluid
Bulla
Definition: A closed cavity or sac that contains fluid or semisolid material
Cyst
Definition: Elevated compressible papule or plaque with a red flare surrounding it
Wheal
Definition: Localized collection of disintegrated or necrotic tissue that may be purulent fluid
Abcess
Definition: A Firm or soft Mass
Tumor
Definition: Solid Mass of skin elevated or palpated
Nodule
Pattern: Twisted Coiled Spiral, Snake like
Gyrate; Scabies
Pattern: Lesions with concentric rings of color
Target; Lyme disease
Pattern: Linear arrangement along nerve route
Zosteriform; Herpes
Pattern: Scratch, streak, line, stripe
Linear; Contact dermatitis, scratching
Pattern: Cluster Lesion
Grouped; Herpes
Pattern: Lesions that run together
Confluent; Measles Uticaria
Pattern: Circular, begins in center and spreads periphery
Annular
Closed vs Open comedones Acne
Open: Whitehead; Closed: Blackhead
Comedolytic Agents for Acne
Benzoyl Peroxide, Salicylic Acid, Azelaic Acids, Tretinoin A, Adapalene, and Tazarotene (Pregnancy Category X)
Topical Atbx for Acne
1 Clindamycin, Erythromycin, Tetracycline, Metronidazole (Rosacea)
Oral Atbx for Acne
1 Tetracycline (Contraindicated pregnancy <9yrs), Erythromycin, Minocycline, Doxycycline, Clindamycin
Severe Unresponsive Acne Oral Atbx
Isotretinoin
What is the most frequently used topical abx for acne?
Clindamycin
What is the most frequently used oral abx for acne?
Tetracycline
What is the contraindication for tetracycline?
pregnancy and children <9
Best Regimen for Oral Contraceptive for Acne
combination therapy (including oral contraceptives); May cause browning
Oral contraceptives for acne
ortho tri-cyc;om. estrostep, yaz, beyaz
Inflammation of Hair Follicle
Folliculitis
Most common Bacteria Folliculitis, Carbuncle, Furuncle
Staph.
Txmt for Furuncle & Carbuncle
Warm Compress, MUPIROCIN; Mod Cases Dicloxacillin or Cephalexin
Txmt for Cellulitis
Dicloxacillin or Cephalexin, Allergic PCN: Clindamycin or Macrolide
Txtmt for Folliculitis
Antibacterial soap and cleanser, warm compress, Topical Atbx (Clindamycin or Mupirocin). Oral (Cephalexin, Dicloxacillin, Doxycycline, Minocycline)
Rapid Progression of erythematous, warm indurated area: Cause & Treatment
Streptococcus; PCN. If allergic Cefalexin or erythromycin
Thin-walled vesicle that breaks easily. HONEY-COLORED CRUST at the edge. “Satelite lesion”
Impetigo
Txmt for Impetigo
Topical: Mupirocin or Ointment Bactroban or Centany and retapamulin (Altabax); Widespread PO Dicloxacillin, Cephalexin or Clindamycin
Abcess formation commonly in groin and Axilla
Hidradenitis Supperativa
Txment for Hidradenitis Supperativa
Lifestyle (Wt. loss, Cease smoke, Hygiene), Topical Atbx: Aminoglycoside (Clindamycin, Gentamicin, Erythromycin), Severe Atbx (Tetracycline, Doxycycline, Minocycline, Clindamycin, Bactrim, Erythromycin + Metronidazole)
Infection of the nail fold
Paronychia
Txtmt of Paronychia
Warm soak 3-4/day. Severe: augmentin, Clindamycin or Cephalexin
Blunt sharp trauma to fingers or toes that has a collection of blood
Txmt?
Subungual Hematoma; Trepination
Name that Fungal infection of the penile head; Txmt
Candida Balanitis; Miconazole, Clotrimazole, Steroid, Fluconazole
Name that Fungal infection of the folds; Txmt
Candida Intertrigo; Talc or cornstarch, Topical Atbx Ciclopirox, Oral Atbx Fluconazole or itraconazole
Name that Fungal infection of the scalp; Txmt
Most Common Fungus
Tinea Capitis caused by Trichophyton (80%); Selenium shampoo, Griseofulvin, Oral terbinafine, itraconazole or fluconazole
Another name for Jock itch; Txmt
Tinea Cruris; Topical or oral antifungal
Another name for ringworm; Txmt
Tinea Corporis; Topical (Miconazole, Clotrimazole, Naftifine, Econazole); Severe (Ketoconazole)
Name that fungal infection that affects nails; Txmt
Tinea Unguium (Onychomycosis); Oral Antifungal (Itraconazole, Terbinafine
Definition: Hypo/Hyperpigmentation macules on limb; Cause of Skin condition and Txmt
Tinea Versicolor for Pityrosporum orbiculare (Malassazia furfur); Topical selenium sulfide, Antifungal: Miconazole, Ciclopirox, Clotrimazole
Txmt for Herpes Zoster; Txmt for Neuralgia
Acyclovir, Famciclovir, Valacyclovir
Gabapentin (Neurontin), Pregabalin (Lyrica)
What age to administer Herpes Vaccine, Type, Frequency
Shingrix x2 (2-6 mnth apart) at age 50
Small patches on the sun-exposed body area that is rough, flesh-colored, pink, or hyperpigmented
Actinic Keratosis
Cancer type that arises from Actinic Keratosis
Squamous Cell Carcinoma
Acronym for Skin assessment; Identity A, B, C, D, E, E
Asymmetry, Border irregularity, Color variation, Diameter > 6mm
Elevation, Enlargement
A slow-growing lesion that is waxy, pearly appearance type that has a central depression or rolled edge; what is a telangiectatic vessel?
Basal Cell Carcinoma; Spider veins
Scaly firm, irregular papule or nodule that develops over a few months that bleeds; Common area to find skin condition?
Squamous Cell Carcinoma, Sun exposed skin on fair skin people
Benign growth or lesions that are black, brown, or black plaques
Painful vs Nonpainful?
Seborrheic Keratoses
Yellow plaques under the skin or on the inner canthus;
Xanthelasma
Eczema vs Psoriasis: Acute Flare ups
Eczema
Eczema vs Psoriasis: Dry leathery lichenification
Eczema
Eczema vs Psoriasis: Auspitz Sign; Please define.
Psoriasis; Droplets of blood when scales removed
Eczema vs Psoriasis: Itchy red defined plaques with silvery scales
Psoriasis
Eczema vs Psoriasis: Inflammed scabbed lesions that are red shiny or thickened patches
Eczema
Eczema vs Psoriasis: Treatment includes UVB light exposure
Psoriasis
Topical treatment for psoriasis in the scalp
Salicylic acid shampoo, Tar
Topical Steroid for Psoriasis
Btamethasone
Sharp-defined border with Redness, pruritis, and scabbing
Allergic Contact dermatitis
Benign hyperproliferative inflammation of the skin
Psoriasis
Herald Patch that follows a Christmas tree pattern
Pityriasis Rosea
Txmt for Pityriasis Rosea
Oral antihistamine, Topical antipruritic, cold compress, Topical steroid, UVB lights, Oral erythromycin
Txmt for Pityriasis Rosea
Oral antihistamine, Topical antipruritic, cold compress, Topical steroid, UVB lights, Oral erythromycin
Differential for Pityriasis Rosea. Define three differences
Syphilis - Non-pruritic, Palmar or plantar surface, Few and Perfect
Pityriasis Rosea - Pruritic, Trunk or proximal extremity, Christmas tree
Transmitting a tick-borne pathogen takes how many hours to transmit.
> 24 hrs
Bacterial species that transmit Lyme disease
Borrelia Burgdorferi
Bacterial species that transmit Rocky Mountain spotted fever
Rickettsiea Rikettsii
Trmt for Lyme disease
1 Doxycycline then Amoxicillin
Trmt for Rocky Mountain Spotted Fever
Adults only: Doxycycline (Stains teeth)
Peds only: Amoxicillin
Lyme vs Rocky Mountain Spotted Fever: Bull’s eye
Lyme disease
Lyme vs Rocky Mountain Spotted Fever: Petechial Rash, Abdominal and Joint pain
Rocky Mountain Spotted Fever
Confirmatory Test for Lyme disease
Western Blot, but start with ELISA
Standard for Rocky Mountain spotted fever test
Indirect immunofluorescence assay, but also order PCR and Immunohistochemical staining
Flat, red, spot lesions that turn into a small blister-filled clear fluid than turn into a pus
Small Pox
Purplish flat bumps on the wrist, lower back, ankles, genitals, scalp and nails
Painful sores in the mouth or genitals
Lichen Planus
Primary way of diagnosing Small pox
First lesion: Mucosa/palate, face or forearm
Centrifugal distribution (Face and distal extremity)
Lesions are in the same stage
Scabs to deep pitted scars
Lichen Planus is associated with another disorder
Hepatitis C
Mgmt Anthrax
Vaccine (Risk Prone individuals)
Atbx (PCN, Cipro, Doxycycline)
Report Health department and Isolate
Fulminant phase of Anthrax
Fever, Diaphoresis, Septic Shock
Prodromal phase of Anthrax
Vague flu-like symptoms fever, dyspnea, malaise, Myalgia
Pruritic papule -> Ulcers -> Necrotic central eschar with edema -> Eschar dry loosens, separates to permanent scar
Anthrax
Anal/Genital wart
Condyloma acuminata
Txmt for Condyloma acuminata
Imiquimod, Podofilox, Cryosurgery, Trichloroacetic acid or bichloracetic acid