Derm Flashcards
first line treatment for acne rosacea
oral tetracycline
topical metronidazole
oral retinoids
tx acne vulgaris
Clindamycin
Doxycycline
Isotretinoin
OCP
abscess larger than boil with multiple openings
carbuncle
most common cause of carbuncle
staph A
inflammation of dermis and subcutaneous fat caused by bacterial infection (commonly GAS, Staph A.) often after damage to skin
borders are not elevated, vessicles are poorly demarcated
cellulities
tx cellulitis
cephalexin 1st line
* if DM, use Trimethoprim-sulfamethoxazole
deep folliculitis, infection of hair follicle with accumulation of pus and dead tissue
furuncle
tx furuncle
topical ab (Mupirocin)
Tzank smear looks for ____, but this test has been replaced by the preferred _____. Can also use.
HSV-1
HSV-PCR
viral culture of lesion
acute, purulent infection, with vessicles on face, arms, legs, buttocks.
impetigo vulgaris (non-bullous)
Common cause of impetigo
Staph A or GAS
tx impetigo
topical mupirocin
systemic Cephalexin
acute, chronic inflammation of mucus membranes on wrists, ankles, nails, scalp. Very pruritic, scaly, polygonal, light purple papules
lichen planus
lichen planus has an increased risk of developing
SCC
tx lichen planus
topical corticosteroids
immunosuppressnat (methotrexate, cyclosporine)
retinoids
poxvirus
can be transmitted sexually
dome shaped lesions with central crater containing white papule
molluscum contagiosum
workup suspected necrotizing fasciitis
clinical dx
blood and tissue culture
plain film x-ray
extreme elevation in CK seen as late sign
tx necrotizing fasciitis
IV penicillin or clindamycin
surgical debridement
most commmon cause of onychomycosis
trichophyton rubrum (90%)
infection around soft tissue of fingernail
paronychia
antifungal for chronich
tx pediculosis
permethrin cream
shave area
HSV7
single, large oval, scaly plaque called ____
then spreads into papular rash parallel to the ribs called _____
Pityriasis rosea
Herald Patch
christmas tree lesion
tx pityriasis rosea
clears within 6-12 weeks
UV light can speed recovery
topical corticosteroids
yellow to white flakes associated with Malassezia spp yeast
seborrheic derm
tx seborrheic derm
selenium sulfide shampoo zinc pyrithione (head and shoulders)
brown white scaling superficial scaling macules
caused by pityrosporum ovale (Malassezia furfur)
and tx
tinea versicolor
topical terbinafine
ketoconazole antifungal cream
describe sebaceous cyst
round, yellow colored, mobile, slow growing, fluctuant nodule
most common benign tumor in older people
stuck on appearance
light brown flat macule that evolves into a n unevan warty waxy papule
seborrheic keratosis
describe wart
hyperkeratotic flesh colored hard papules
cell mediated delayed type IV hypersensitivity reaction
erythema with papulovesicular eruption, swelling, pruruits
Contact dermatitis
type I IgE mediated hypersensitivity reaction with epidermal barrier dysfunction
eczema
infection with mycoplasma pneumonia, HSV
vesicles and bullae that have classic bulls eye pattern
erythema multiforme
autoimmune disease
IgG aginst epidermal desmoglein 1 and 3 leads to loss of intercellular adhesion
type II hypersensitivity reaction
pemphigus vulgaris
workup pemphigus vulgaris
Nikolsky sign
IgG and C3 deposition
serum anti-desmogloein IgG ab
tx pemphigus vulgaris
corticosteriods (prednisone)
Immunosuppressives (methotrexate) - may be fatal without
IgG ab against dermal-epidermal basement membrane proteins which leads to subepidermal bullae
Type II hypersensitivity reaction
bullous pemphigoid
well-demarcated flat elevated erythematous papules
plaques with silvery white scales
psoriasis
tx psoriasis
sunlight
topical corticosteroids
retinoids
systemic methotrexate
precursor to scc
small rough spots that turn into hyperkaratotic, pearly grey lesions due to long term sun exposure
actinic keratosis
tx for actinic keratosis
liquid nitrogen
5-fluororuacil
excision
most common malignancy
skin colored papule/nodule with rolled, translucent border
telangiectatic vessels
BCC
tx BCC
shave excision
cryotherapy
topical 5 fu
radiation (elderly)
spindle cell tumor from endothelial cell
raised round oval papules that are red purple and ulcerate
skin, mouth, GI tract
AIDS, HPV8
kaposi sarcoma
tx Kaposi sarcoma
HAART
excision
hx of arsenic exposure
most common complication of immunosuppressive therapy
indurated erythematous nodule/plaque with surface scale/crust ulceration
often lowe lip ear, forehead
Squamous cell carcinoma
tx SCC
Mohs
surgical excision
strong topical corticosteroid drug that treats inflammatory hyperkeratotic dermatosis
Mometasone
antibiotic used for dog bites
amox-clav
homeopathic for fearful, wakes at 2am-4am, stitching stabbing pain, worse cold, better movement, lots of colds
kali carb
what herbs are safe for derm conditions in children
mellissa, echinacea, sambuca
proper management of puncture wounds
apply lidocaine, epi, tetracine gel. Clean with iodine and irrigate with saline. Cover with gauze and allow to heal with secondary intention.
What vaccine should you give with dog bite
DTaP booster due to tetanus risk
herbal acne treatment
arctium lappa, berberine, rumex, galium
topical botanicals for psoriasis
berberis and smilax
homeopathic for simple speach, cold, rose hot shower, worse morning, constipated
graphites
cranial caudal macular papular rash with CLAD and fever
rubella
cough coryza conjunctivitis koplick spots
measles
HHV6/7 maculopapular rash with high fever
roseola infantum
tx for vitiligo
copper
vit D
phylalanine
tx atopic derm
psorinum
sulphur
vit C
when do drug eruptions begin
7 days post med
lichen planus vs lichen simplex
lichen planus: wickham striae, 5 ps hep C
lichen simplex: red, scaling, itching