Lice & Scabies Flashcards
Three species of lice exist:
1.
2.
3.
Public Lice
Head Lice
Body Lice
Adult lice can live up to how many days on the scalp?
30 days
True or False: scabies or lice are not transmitted between humans and animals
TRUE, Pets do not transmit any type of human lice and should not be treated.
Diagnosis / treatment of any type of lice requires detection of ?
Live Lice, treatment should not be initiated unless there is live lice visualized
Non Drug measures for lice:
1.
2.
3. Mechanically remove head lice
- identify and examine potential human contacts (especially hair to hair contact or sexual contact for public lice)
- Treat personal items or home/room
- laundering items in hot water cycle
- seal non washable items in bag for 2 WEEK
- vacuum thoroughly
How long should ones non-washable items be bagged for in lice ?
At least 2 weeks
Treatment of lice should be repeated in __ days
7 days
True or False:
Family members and close contacts of individuals with head lice should be examined and treated at the same time if infested
True
What are the 4 drug treatment options for the treatment of lice?
1.
2.
3.
4.
- Permethrin 1%
(Nix) - Pyrethrins/piperonyl butoxide (R&C)
- Isopropyl myristate/cyclomethicone (Results)
- Dimeticone 50% (NYDA)
These two treatment options for lice are neurotoxic insecticides:
1.
2.
- Permethrin 1%
- Pyrethrin/piperonyl butoxide
This therapy for lice disrupts wax layer of louse exoskeleton physical kills VIA DEHYDRATION
Isopropyl myristate/cyclomethicone
This therapy for lice is silicone based oils that coats louse and physically kills via SUFFOCATION
Dimeticone 50%
First line treatment for lice therapy ?
1.
2.
- Permethrin 1%
- Pyrethrins/piperonyl butoxide
2nd Lind treatment for lice ?
1.
2.
- Isopropyl myristate/cyclomethicone
- dimeticone 50%
Permethrin 1% and Pyrethrins/piperonyl butoxide are contraindicated in children < ______ ?
2 months old
Isopropyl myristate.cyclomethicone is contraindicated in children < _____ ?
2 years old
dimeticone 50% is contraindicated in children < ____ ?
2 years old
Isopropyl myristate/cyclomethicone and dimeticone 50% are both contraindicated in __________ & __________
pregnancy and breastfeeding
These two lice therapies are unlikely to develop resistance ?
1.
2.
Isopropyl myristate/cyclomethicone & dimeticone 50%
Most common side effect associated with lice therapy ?
Local Irritation
________ is CONTRAINDICATED in chrysanthemum allergy, possibly ragweed allergy due to cross-sensitivity
Pyrethirins
_________ is likely safe in chrysanthemum/ragweed allergy
Permethrins
Application of all lice products are similar however Permethrin’s initial step varies compared to the rest, explain?
Hair must be WASHED with CONDITIONER-FREE shampoo and towel dry. Treatment is applied to damp hair and scalp
Leave treatment on for 10 minutes then rinse
then nit comb
and may repeat in 7 days
Application of all lice products are similar however Dimeticone varies in its own unique way, explain ?
Applied to dry hair and scalp, but LEAVE ON FOR 30 MINUTES and nit comb
THEN LEAVE ON FOR ATLEAST 8 HOURS before washing off
In the case of lice treatment failure:
1.
2. permethrin 5% cream
3. oral tmp-smx with permethrin 1%
4. Oral ivermectin
- try another agent different class
Itching alone is NOT a sign of treatment failure, itching may persist for several days after treatment. Either of these two may be used for relief:
1.
2.
An oral antihistamine or low-potency topical corticosteroid may be required for relief
Scabies is a highly contagious ________ skin infection
parasitic
Scabies primarily spreads through?
Direct contact
True or False:
Pharmacist can diagnose Scabies?
False, diagnosis must be made by HCP
Scabies prevalence increases in:
1.
2.
- crowded conditions
- institutional environments
Common signs and symptoms of scabies:
1.
2.
- intense itching that worsens at night
- burrows on hands and flexor surfaces (white grey linear or wavy lines beneath skin surface)
This type of scabies occurs ion immunodeficient patients and is more contagious. It requires aggressive treatment
Crusted or Norwegian scabies - pruritus may be absent due to altered immune status. patient presents with exfoliating scales
True or false: In scabies all contacts within preceding month require treatment even if asymptomatic
True
Non drug options in treatment of scabies involves
1. avoid sharing belongings
2. wash linens and clothing in hot cycle
3. seal items for at least _______
4. vacuum areas
- 5-7 days
For headlice when can one return to school or work?
After first treatment
For scabies when can one return to work or school?
one day after treatment
First line treatment for scabies:
1.
- Permethrin 5%
Second line treatment for scabies:
1.
- Sulfur 8-10%
Permethrin 5% in scabies is contraindicated in infants _____
< 3 months old
Sulfur 8-10% is safe in infants ____
< 3 months old
Scabies treatment options safe in pregnancy and breastfeeding?
- permethrin 5%
Sulfur safe in pregnancy
Main side effects associated with sulfur scabies treatment?
1.
2.
3.
- irritation
- malodorous
- stain clothing
