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tinea corpis appearance ▪Physical findings: flat, scaly, red circular patches with central
clearing, and raised borders ▪Typical arrangement pattern: annular or localized ▪Location of
lesion: anywhere on body
Tinea corpis treatment Topical azoles and allylamines
if resistant, use systemic
acne cause inflammatory process- Abnormal adherent keratinocytes cause plugging of
follicular duct followed by accumulation of sebum and keratinous debris ▪Results in formation
of primary form of acne - comedones ▪Inflammation of comedones produces papules, pustules,
and nodules
comedones also called blackheads; masses of sebum trapped in the hair follicles-primary
acne
mild acne closed comedones(white heads) open comedones (black heads) occasional
pustules
moderate acne comedones open and closed papules, pustules
severe acne comedones(open and closed), erythematous papules, pustules, cysts
how common is acne 80-85% of people 11-30 yo
mild acne treatment topical antibiotic 2x per year
,▪Gentle facial soap-Dove or Neutrogena ▪Topical benzoyl peroxide gel (2.5%, 5%, 10%) q AM
▪Topical tretinon (Retin-A) 0.025% cream or 0.01% gel nightly after cleansing skin
Moderate acne treatment ▪Cleansing regimen ▪If no response to regimen for mild acne, stop
Benzoyl peroxide and start topical antibiotic solution (Clindamycin, erythromycin) AM and PM
▪Oral antibiotics: Tetracycline 250-500mg BID x 1-2 months or Erythromycin 250-500 mg BID, or
Doxycycline 50-100 mg/dose/day ▪Consider referring to dermatologist ▪ - pregnancy test before
prescribing
tetracycline requires what before treatment can start pregnancy test
education for acne may get worse before better
neonatal acne cause response to maternal androgen
neonatal acne timeframe appears at age 2-4 weeks, subsides by ages 4-6 months
Acne vulgaris ▪ Begins preadolescence ▪ Peak ages 16-19 males & 14-17 females
order of most contaminated bites between cats, dogs, and humans (most) human, cat, dog
(least)
bite tx ▪Irrigation of wound with normal saline ▪Debridement of area ▪Assessment for
possible presence of foreign body ▪Assessment of need for surgical closure- usually bite wounds
are not sutured because of the risk of infection from the contaminated wound
give tetanus shot with bite if ▪Incomplete immunization ▪No booster dose within last 5 years
▪Immunization status is unknown (unless hxof anaphylaxis, immunization is not harmful)
, dog or cat bite bacteria ▪Pasteurella multocida ▪Strep ▪Staph ▪Anaerobes
human bite contaminants ▪Staph ▪Strep ▪anaerobes
bite antibiotic tx Augmentin 40 mg/kg/day in 3 doses X 7-10 days ▪ Penicillin V 50 mg/kg/day
in 3 doses X 7-10 days ▪ Doxycycline 2-4 mg/kg/day in 2 doses X 7-10 days (do not give < 8 yo) ▪
Erythromycin 30-50 mg/kg/day in 4 doses X 7-10 days
doxy can not be given to children under 8 yo
benadryl dose 1-2 mg/kg q4-6hr
Rabies prophylaxis method after animal bite? ▪HRIG (human rabies immunoglobulin)
Imogam 20 IU/kg total dose ▪ 10 IU/kg infiltrated around wound ▪ 10 IU/kg given IM followed by
▪HDCV (human diploid cell vaccine) Imovax1ml IM on days 0, 3, 7,14, 28 ▪Determine rabies
status of animal ▪Notify authorities- animal needs to be observed
delayed reactions to bites and stings ▪Systemic with varied manifestations ▪Serum sickness-
like reaction ▪Myocarditis ▪Transverse myelitis ▪Nephrosis
black widow spider bite ▪ Effects can range from mild to severe ▪ Within one hour of bite:
local erythema and pain in regional lymph nodes and local muscle groups ▪ Severe cramping in
abdomen, thorax, and back; vomiting, seizure, BP ✓ may cause stabbing pain in the bite area,
but can be painless. ✓ note one or two red fang marks, redness, tenderness, and a nodule at
the bite site. ✓ Cleanse bite area ✓ seek medical care if symptomatic. Anti-venom medicine is
available