Lecture 6 - Dermatology 3 Flashcards
(49 cards)
3 types of lice
Pediculus = Head and body….2-3mm in size
Phthirus = Crabs = 1mm size
symptoms of lice
inflammation and itching
presence of peppery flecks
macular swellings
behind ear good area to look
Lice treatment
topical pediculicides are typically preferred
1st line lice Treatment
Pyrethrin 0.33% and Permethrin 1%
0.33% > 2yrs, 1% > 2 months
about same cost
put into hair, let sit for about 10 min, remove with special comb
reapply in 7-10 days
2nd line lice treatments
topical prescription meds if fail/dont respond to 1st line
typically use Malathion
Malathion 0.5% lotion info
apply to dry hair, let air dry and wash off
usually 1 treatment enough, can repeat in 9 days
CI < 24 months old and dont use P.pubis
** Flammable until dry and malodorous **
Benzyl alcohol 5% lotion info
can use in infants 6 months or older who OTC dont work
applied to dry hair, rinsed after 10min and repeated after 7 days***
Is permethrin 5% more effective than 1%?
nah if failed 1% then probs fail 5%
Spinosad 0.9% suspension info
more effective than permethrin
apply to dry hair, rinse after 10min, repeat 7 days if live lice seen
Dont need to Nit comb, but recommended
Ivermectin 0.5% lotion info
can use > 6 months or older
apply, and rinse after 10min, single app
Why is Lindane 1% not recommended
Adverse drug events
Abametapir (Xeglyze) Lotion info
approved for those older than 6 months
apply, rinse after 10min
Can use shampoo anytime after treatment**
more risk of contact dermatitis
Oral lice treatments
Bactrim or Ivermectin
Bactrim: CI < 2months, preg/nursing, sulfa allergy
Ivermectin: 1 time dose
Non-pharm lice treatments
Petroleum jelly = massage int hair and left overnight, shampoo next morning…repeat 1 week
Cetaphil lotion = apply to hair, dry with hairdryer, leave overnight and shampoo morning, QW X 3wks
Lice exclusion for self-care w/ OTC
Hypersensitivity to chrysanthemums, ragweed, pediculicide ingredients
Presence of 2ndary skin infection
Presence of active tumor
2 previous unsuccessful treatment attempts
< 2yrs of age
Lice infestation of eyebrows/eyelid
Pregnancy/breast feeding
Lice counseling points
Treat other members
clean all bedding/clothing and high-heat drying
non-washable can be dry-cleaned of sealed bag for few weeks
vacuum
disinfect combs/brushes
teach children to avoid head-to-head contact
Factors that can affect acne
Hormone abnormalities or malfunctions
Physical occlusion or damage
Meds
other - Genetics, Climate, Diet, Excessive Sweating
Exclusions to Acne treatment
pts w/severe acne Type 3-4
Drug-induced acne
Possibility that its not acne
Acne persists or develops >30yrs old
No improvement after treatment attempt or 6 weeks
Non-pharm acne treatments
stress reduction
avoid extreme temps
use nondrying cleansing agents, dont want dry skin
can try comedones extractors
goals of acne therapy
reduce excess oil
control bacteria associated with acne
reduce effects of hyperkeratinization
unclog pores
what to use on Oily to normal skin?
Gels and solutions
what to use on normal skin?
Gels, solutions, lotions and creams
What to use on Normal to dry skin?
Lotion and Creams
Benzoyl peroxide info
no resistance reported
effects seen in ~5 days
comes in bunch of formulations
Fair or moist skin highest risk of irritation
can bleach or discolor fabrics
