Dermatology

Question 1

Differentiate between a papular and a nodule

Answer 1

Papules are solid filled lesions <1cm
Nodules are solid filled lesions >1cm

Question 2

What is the diff between vesicles, bulla and blisters

Answer 2

Vesicles are fluid filled lesions <1cm (1cm or less)
Blisters are either vesicles or bulla
Bulla is a fluid filled >1cm (more than 1cm)

Question 3

What’s a pustule

Differentiate it from a papular and macule

Answer 3

Pustule is a pimple, it is pus filled in the middle and less than a cm
Papular is solid and less than 1cm
Maculae is flat

Question 4

What conditions cause skin crusting

Answer 4

Atopic eczema
Contact eczema
Infected eczema

Question 5

What are the likely causes of eczema or contact dermatitis

Answer 5

Irritants eg detergents
Allergens eg nickel, chromates

Question 6

What is the aetiology of pustular psoriasis

Answer 6

Withdrawal of steroids abruptly

Question 7

Findings on culture and macroscopy of pustular psoriasis

Answer 7

Sterile pustules

Question 8

What are the key clinical features of pustular urticaria

Answer 8

Linear lesions
Different stages
Sparing if nappy area

Question 9

What is epidermolysis bullnose

Answer 9

Congenital disorder whereby there is a peeling of skin
Baby is born with a rare blistering disease
Needs tertiary care and expert nursing

Question 10

Differentiate between a papular, nodule and a plaque

Answer 10

A plaque has a flat top and it’s raised skin

Question 11

Describe the morphology of acne

Answer 11

Papules, May or May not involve hair follicles
Nodules
Pustules
Erythema

Question 12

Who are most at risk of folliculitis keloidalis nuchae

Answer 12

African men
Curly hair in grows into the skin

Question 13

How would you treat folliculitis keloidalis

Answer 13

Steroids

Question 14

What is the treatment for acne

Answer 14

Benzoperoxide - keratinises the skin

Question 15

What is the treatment for warts

Answer 15

Salicylic acid and zinc oxide plaster

Question 16

What is the morphology of molluscum contagiousum

Answer 16

Shiny papular with central dimple

Question 17

What is the causative org for molluscum contagiousum

Answer 17

Poxvirus

Question 18

What differentiated scabies from urticaria

Answer 18

Scabies are from contact with other people, other family members will also itch.
Urticaria comes and gives, could be due to a new medication or food

Question 19

What would you use to treat scabies

Answer 19

Benzyl Benzoate to whole family

Question 20

What could cause pruritus but normal skin

Answer 20

Cholestatic liver disease incl pregnancy
Kidney disease
Thyroid disease
Iron deficiency
Lymphoproliferative disease
Psychological causes

Question 21

Treatment for chronic eczema

Answer 21

Potent topical steroid
Moisturiser
Soap substitute

Question 22

What is the treatment for psoriasis

Answer 22

Salicylic acid
Tar
Typical steroid
Natural Uv light

Question 23

How long does pityriasis roses manifest

Answer 23

6 weeks course

Question 24

Describe the characteristics of lichen planus

Answer 24

5Ps

Pruritic
Purple
Polygonal
Plane topped
Papules

There are lacy planes in the mouth

Question 25

What is chronic peeling usually a result of

Answer 25

Nutrient deficiency such as B3 deficiency

Question 26

What are the causes of acute peeling

Answer 26

Viral exanthem
Staphylococcal skin scalded syndrome (SSS) j
Toxic shock (staph or strep)
Drug reaction

Question 27

What do you call fish-like scaly skin presentation

Answer 27

Ichthyosis