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