Infestations, bites, urticaria, and ventricular/bullous Flashcards
What is the presentation of lice?
itching, crusting, maybe blepharitis in the eyelashes
How do you treat lice?
OTC permethrin with a 2nd treatment 1 week later
or ivermectin (sklice)
How should you test for scabies?
saline mount is better than KOH
What do flea bites look like?
tiny red dot or bite, pruritic, lesions grouped around ankles/lower legs
How do you treat fleas?
treat your animals, methoprene
What is erythema migrans?
lyme disease from borrelia tick – target sign at location; spontaneous healing, erythematous lesion with ring
How do you treat erythema migrans?
doxycycline or amoxicillin or ceftin
What is the presentation of rocky mountain spotted fever?
acute onset of fever, severe headache, myalgia, and vomiting
petechial rash on trunk from rickettsia tick
What does a black widow bite present like and how would you treat it?
muscle cramping, n/v, HTN, spasm, target lesion
wound care, supportive, benzos for severe symptoms
What does a brown recluse bite present like and how would you treat it?
hourglass shape spider that causes a bulls eye lesion, red white and blue wound with fever, chills, nausea, necrosis, and ulceration.
– immobilization, ice, elevation, not specific treatment
How does urticaria present?
vascular reaction with wheals, white or red plaques, halos or flares, severe itching, stinging, pricking, local edema
How do you treat urticaria?
remove offending agent
oral antihistamines
recurrent = oral steroid- prednisone
severe = epi
What is pemphigus?
blistering on skin and mucous membranes FLACCID bullae “squishy” crusts and erosions, start in mouth
What should you test for pemphigus?
biopsy, microscopy, nikolsky signs (+)(detachment?)
How do you treat pemphigus?
systemic glucocorticoids and azathioprine, mycophenolate, mofetil, rituximab
and wound care
recurrent = IV steroids
