Exam 1 derm key points Flashcards
key points: dermatitis herpetiformes
a/w celiac. Intensely pruritic, easily rupture vesicles
key points: porphyria cutanea tard
painless blistering on hands, elevated urinary porhyrins
key points: erythema migrans
target lesion, tick bite
key points: cellulitis
staph, gram stain for Dx, diffuse spreading superficial infx, fever, chills. common in diabetics and people w/ venous insufficience
key points: folliculitis
in hairy areas. pustules with hair growing out of them
key points: erisipelas
well circumscribed papule, pain, fever, malaise and other infx sxs
key points: discoid lupus
when scale is scraped, spiny projections. sun exposed area.
key points: herpes simplex
grouped vesicles on erythematous base
key points: herpes zoster
dermatomal pattern, unilateral. neuritic pain lasting long after skin signs disappear.
key points: varicella
chicken pox. see lesions in various stages. tzanck smear. varivax vaccine.
key points: scabies
burrows, pruritic, mites present
key points: insect bites
duh
key points: molluscum contagiosum
discrete, umbilicated papules. very infectious. no itching.
key points: hand, foot & mouth
the name says it all. painful vesicles in mouth, maculopapular everywhere else
key points: roseola infantum
abrupt high fever for the prodrome. fine, blanchable mac and pap
key points: rubella (german measles)
high risk to fetus, generalized lymphadenopathy, fever. vaccine: MMR
key points: erythema infectiosum (fifth’s disease)
slapped face appearance. lacy rash. anemia concerns
key points: rosacea
flushing, telangiectasis, adult acne, if untreated: rhinophyma
key points: rubeola
cough, coryza, conjunctivitis
key points: acne
cystic lesions break walls and spill into dermis. blockage of follicles w/ keratinized tissue
key points: tinea versicolor
spaghetti and meatballs w/ KOH. affected skin will not tan normally
key points: tinea corporis
annular lesions on the body. hyphae w/ KOH
key points: tinea cruris
dermatophyte infx in the groin, buttock fold region. hyphae w/KOH
key points: tinea pedis
4 types: mocassin, interdigital, bullous/inflammatory, ulcerative. athlete’s foot
key points: impetigo
honey colored crust. staph.
key points: psoriasis
silvery scales on erythema. psoriatic arthritis. auspitz sign. koebnerization. pitting nails.
key points: pityriasis rosea
christmas tree pattern, herald patches, cigarette paper appearance, trunk
key points: seborrheic dermatitis
greasy scales. cradle cap in infants. head, nasolabial folds, chest, and buttcrack in adults.
key points: contact derm
edema, papules can be localized to sight of exposure or generalized
key points: atopic eczema
atopic triad: eczema, asthma, allergic rhinitis. extensor surfaces and face on kids. flexural and symmetrical on adults.
key points: mycosis fungoides
plaques w/ lymphedema due to t-cell lymphoma. Sezary cells in blood is a late sign
key points: malignant melanoma
ABCD. bleed easily. 4 types: superficial, lentigo maligna, acral lentiginous, nodular (most aggressive
key points: squamous cell carcinoma
ulcerated, many colors. can arise from actinic keratosis, leukoplakia
key points: basal cell carcinoma
rolled borders, telangiectasia, bleed easily. most common type of skin cancer. 4 types: pigmented, superficial, ulcerative, nodular.
key points: actinic keratosis
sun exposure. easier to feel than see. scale or dry rough patch
key points: keratoacanthoma
rapid growth. self resolving. nodular. can look like SCC.
key points: seborrheic keratosis
greasy, stuck on, hyperpigmented appearance. Variations: stucco keratoses, dermatosis papulosa nigra, lesler trelat sign (sudden appearance w/ inflammation, possibly malignant)
