Skin Infestations

Question 1

Where does scabies usually affect?

Answer 1

• warmer areas eg. finger webspaces, wrists, axillae, waist, feet, ankles

Question 2

What are the signs of scabies?

Answer 2

• burrows (linear tunnel in which mite lives)
• papules
• blisters
• nodules
• intensely pruritic (most severe at night)

Question 3

What is the treatment for scabies?

Answer 3

2 doses, each dose one week apart:

• Malathion
• Permethrin
• boil wash clothes and sheets - VERY contagious

Question 4

What is the treatment for insect bites?

Answer 4

anti-histamines for itch

Question 5

What do insect bites look like?

Answer 5

• erythema
• local wheal
• flare

Question 6

What is Pityriasis versicolor?

Answer 6

yeast infection causing flaky discoloured patches on chest and back.
- more common in hot , humid climates

Question 7

what does pityriasis versicolour look like?

Answer 7

• affects trunk, neck, arms
• patches coppery brown, paler than surrounding skin or pink.
• sometimes start scaly and brown then resolve through a non-scaly/white stage.
• usually assymptomatic but can be mildly itchy/

Question 8

What is the treatment for pityriasis versicolor?

Answer 8

• topical azole cream / shampoo
• terbinafine gel
• selenium sulfide