Flashcards in Introduction to Dermatology Deck (38):
What is the biggest organ in the body?
How many skin conditions make up 70% of all skin disease in the Uk?
What are these 9 skin conditions?
What are the 3 big layers of the skin (external to internal)?
Fat and connective tissue (sub. cut.)
What are the 5 layers of the epidermis (external to internal)?
Granular cell layer
Spinous cell layer
Stratum basale/Basal cell layer
What main structures does the dermis contain?
Glands (sweat, apocrine, sebaceous)
What does the skin act as a barrier to?
What does the skin use to regulate temperature?
Changes in blood flow
What biochemical functions do sweat glands have?
Vitamin D synthesis
Androgen pro-hormone conversion
Whatr other functions does skin have?
Protection of internal structures
What 5 Ds are important in the impact of skin disease?
Disability, discomfort, depression, disfigurement, and death
What symptoms can skin disease cause?
What can be used to measure the impact of skin disease? (2)
Dermatology Life Quality Index (DLQI)
Psoriasis Area Severity Index (PASI)
What features are important in taking a dermatology history WRT patient demographics?
What FH is important to ask in a dermatology history?
Inherited skin diseases
Communicable infection within family unit
Previous exposure to specific skin diseases (eg VZV)
What social history is important to take in a dermatology setting?
Smoking and alcohol
What equipment is used to exmine the skin?
A dermatoscope (plus your eyes and hands)
A good light
What is important in a history for a solitary lesion?
Age of pt
Change over time (size, shape, colour)
Hx of similar lesion and treatment
FH of skin cancer
Where should be examined in a dermatology consultation?
All over - where the lesion is,plus all the skin including nails, scalp, behind ears, and inside mouth
What distribution may a skin problem manifest in?
Symmetrical or not
Pattern (eg dermatomal)
What is the Koebner phenomenon?
Typically associated with psoriasis and a few other skin conditions, a patch of skin initially unnvolved develops lesions due to cutaneous trauma
i.e. i scratch my skin, loads of psoriatic lesions form where my nails went
Apart from position, shape and size, how else should a solitary lesion be described?
What is a wheal?
A very itchy, evanescent, circumscribed area of redness/oedema; characteristic of hypersensitivity and/or anaphylactic reaction
What is the difference between an erosion and an ulcer?
The depth - an erosion is more superficial, the ulcer penetrates the skin deeper
What is a fissure?
Where thick patches of skin affected by psoriasis crack
What is an excoriation?
Skin abrasions, usually superficial, due to scratching of the skin
Which layer of the skin varies the most? How?
The stratum corneum - it varies in thickness according to where on the body it is
How big is a papule?
Less than 5mm across
How big is a ndoule?
What is a vesicle? What is a bulla?
Respectively, a small and a large water blister
What is a pus-filled vesicle called?
What is telangiectasia?
A threaded vein
What is alopecia?
What is hairiness known as?
What are striae?
What is pruritus?
What is a macule?
A non palpable area of discolouration