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WorksheetsCRABS - PBL B5
Total questions: 10
Worksheet time: 5mins
A patient brings in underwear with brownish stains and says her partner also has symptoms. She is worried she gave her cat lice. What should you explain?
Both the patient and the cat must be treated with permethrin
Pubic lice can survive on animals only for 48 hours so doesn't need to be treated
Pubic lice can't infect cats so you have nothing to worry about
The cat must be treated with veterinary permethrin
A patient treated himself with permethrin 5% twice, correctly, but symptoms persist. What is the most appropriate next step?
Advise third application of permethrin
Switch to malathion 0.5% immediately
Refer to GP
Suggest shaving hair to remove lice
A mother asks if she can use permethrin 5% on her 3-month-old baby with suspected crabs. What should you advise?
Yes, permethrin 5% is safe from 2 months, so refer to GP
No, but malathion 0.6% is acceptable from birth, so refer to GP
Both treatments are unsafe under 6 months, so refer to GP
Malathion 0.6% is recommended from 6 months, so refer to GP
A student living in shared housing reports infestation and asks whether she needs to wash her friends’ bedding. What is the correct advice?
Only her own close contacts require to wash the bedding
All housemates’ bedding must be washed
Bedding doesn't need to be washed as lice die quickly
Bedding must be washed professionally
A couple presents, one symptomatic and one asymptomatic. What advice is correct?
Only the symptomatic partner needs treatment
Treat both partners simultaneously
Treat symptomatic partner and treat the asymptomatic partner if they develop itching
Advise abstinence but no treatment needed for the partner
A patient asks why the itching is so severe. What explanation aligns with the symptoms?
Lice excrete toxins into hair follicles
Lice inject saliva into skin
Eggs irritate the skin surface
Scratching causes histamine release primarily
Which of the following is recommended to help stop the spread of lice?
Use an insecticide spray
Wash your bedding and clothes at a low temperature to not damage them
Don't share razors
Don't practice abstinence
A 40-year-old man washes all linens but refuses to heat-wash clothes. What do you say?
It's not necessary as lice die at room temperature
Handwash the clothes with Dettol
Freeze the clothes instead
Heat washing is required
A man presents with potential crabs but also complains of fever. What is your action?
Supply permethrin but monitor for infection
Supply malathion and antihistamines
Refer to GP immediately
Supply malathion and antibiotics
A man asks if he can wear tight underwear after applying permethrin 5%. What do you recommend?
Yes, it improves penetration
No, skin must be left uncovered to dry naturally
Can only wear loose cotton underwear
It makes no difference