Rashes Flashcards
erythematous serpiginous macular lesions w/ pale centers on trunk/extremities
erythema multiforme
think rheumatic fever
atrophic and translucent acral integument
acrodermatitis chronica atrophicans (late comp of Borrelia afzelii, mostly in Europe)
reticulated brown network on skin chronically exposed to high temps
erythema ab igne
- permanent
- may undergo malig. xform to squamous cell carc
inflamm skin dz, usually in adults: erythematous plaques w/ central clearing and peripheral “trailing” scale
erythema annulare centrifugum
erythematous malar rash -> erythematous maculopap eruption on extensor extremities
erythema infectiousum
- as it fades -> central clearing causes reticulated lacy patterned rash, waxes/wanes for 9-11 days
agents used to tx pediculus humanus capitis (head louse)?
- lindane
- pyrethrins combined w/ piperonyl butoxide
- malathion
- permethrin
macule or papule w/ central hem. punctum on shoulder, trunk or buttocks
pediulus humanus corporis
intense pruritus of finger webs, wrists, and aerolae of nipples/glans in men
scabies
lichenification and posterior LAD cause?
scratching secondary to head lice
severe erythema multiforme, on at least 2 mucosal surfaces, <10% BSA
SJS
> 30% BSA?
TENS
widespread pustular dz with fever in response to a med
acute generalized exanthematous pustulosis
tense non flaccid non inflamm bullae on palms and soles
epidermolysis bullosa acquisita (autoabs against type VII collagen)
fever, diffuse erythematous rash, exfoliation, Nikolsky sign, sparing of mucosa
staphylococcal scalded skin syndrome
rose-pink macular rash on trunk-> arms and face kid 7-13 months after fever
roseola infantum aka exanthema subitum
1-3 cm pink macules and papules and annular plaques that wax and wane w/in hours and are greatly accentuated by heat
erythema marginatum of RF
disseminated hyperpigmented oval shaped macules that urticate when rubbed. persist for months or years then resolve spontaneously
urticaria pigmentosa
persistent urticarial plaques +/- fever, elevated ESR
urticarial vasculitis
well demarcated erythematous raised skin lesions w/ central clearing of various sizes that coalesce to form geographic plaques
urticaria
cause: IgE hypersensitivity, often affects lips and upper resp/GI tracts
rose-colored, blanching, maculopapular rash that begins on extremities and spreads centripetally to the entire body; erythematous macules can change to petechiae
Rocky Mtn Spotted Fever
small, well demarcated oval plaque yellow-orange, slightly raised on infant head or neck, surrounded by area of alopecia; becomes wartlike by adolescence
nevus sebaceous
- often comp by secondary malignancy in adulthood (BCC), so bx done
nevus on back; center disappears over months, leaving hypopigmented area around it
halo nevus
- kids with vitelligo are predisposed
permanent patch of blue, black, and brown macules that may enlarge/darken over time; MC on supraclaviuclar, scapular, and deltoid regions; speckled appearance
nevus of Ota
- MC in females, Asians, and blacks
- malig degen rare
