Dermatology Flashcards
Differentiate between a papular and a nodule
Papules are solid filled lesions <1cm
Nodules are solid filled lesions >1cm
What is the diff between vesicles, bulla and blisters
Vesicles are fluid filled lesions <1cm (1cm or less)
Blisters are either vesicles or bulla
Bulla is a fluid filled >1cm (more than 1cm)
What’s a pustule
Differentiate it from a papular and macule
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
What conditions cause skin crusting
Atopic eczema
Contact eczema
Infected eczema
What are the likely causes of eczema or contact dermatitis
Irritants eg detergents
Allergens eg nickel, chromates
What is the aetiology of pustular psoriasis
Withdrawal of steroids abruptly
Findings on culture and macroscopy of pustular psoriasis
Sterile pustules
What are the key clinical features of pustular urticaria
Linear lesions
Different stages
Sparing if nappy area
What is epidermolysis bullnose
Congenital disorder whereby there is a peeling of skin
Baby is born with a rare blistering disease
Needs tertiary care and expert nursing
Differentiate between a papular, nodule and a plaque
A plaque has a flat top and it’s raised skin
Describe the morphology of acne
Papules, May or May not involve hair follicles
Nodules
Pustules
Erythema
Who are most at risk of folliculitis keloidalis nuchae
African men
Curly hair in grows into the skin
How would you treat folliculitis keloidalis
Steroids
What is the treatment for acne
Benzoperoxide - keratinises the skin
What is the treatment for warts
Salicylic acid and zinc oxide plaster
What is the morphology of molluscum contagiousum
Shiny papular with central dimple
What is the causative org for molluscum contagiousum
Poxvirus
What differentiated scabies from urticaria
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
What would you use to treat scabies
Benzyl Benzoate to whole family
What could cause pruritus but normal skin
Cholestatic liver disease incl pregnancy
Kidney disease
Thyroid disease
Iron deficiency
Lymphoproliferative disease
Psychological causes
Treatment for chronic eczema
Potent topical steroid
Moisturiser
Soap substitute
What is the treatment for psoriasis
Salicylic acid
Tar
Typical steroid
Natural Uv light
How long does pityriasis roses manifest
6 weeks course
Describe the characteristics of lichen planus
5Ps
Pruritic
Purple
Polygonal
Plane topped
Papules
There are lacy planes in the mouth
What is chronic peeling usually a result of
Nutrient deficiency such as B3 deficiency
What are the causes of acute peeling
Viral exanthem
Staphylococcal skin scalded syndrome (SSS) j
Toxic shock (staph or strep)
Drug reaction
What do you call fish-like scaly skin presentation
Ichthyosis
