Lecture 18 Skin Flashcards
Where is vitamin D synthesised?
Skin
What are the layers of skin from outside to in?
Epidermis, dermis and subcutaneous tissue
What is a vesicle?
Raised clear fluid filled lesion
What is a bulla?
Raised clear fluid filled lesion >0.5cm
What is a macule?
Flat area, altered colour,
What is a patch?
Flat area altered colour or texture >0.5cm
What is a plaque?
Palpable scaling raised lesion >0.5cm. Red, scaly, bumpy, itchy. Elbows
What is a papule?
Solid raised lesion
What is a nodule?
Solid raised lesion >0.5cm with deeper component
What are papillomas?
wart like
Name the benign lesions
Fibroepithelial polyps, naevi, sebaceous cyst, seborrhoeic keratosis, haemangioma
What are fibroepithelial polyps?
Common in middle-aged and older people. Flesh coloured bag like lesion (mine).
Where are fibroepithelial polyps found?
Face, neck, axilla, groin, trunk.
What are naevi?
Proliferation of melanocytes (colour producing cells).
What are sebaceous cysts?
Term covers two types of cysts. Invagination of epithelium. Pilar cyst and epidermoid cyst.
What is seborrhoeic keratosis?
Middle aged and older people, spontaneous arrival. Head, neck and trunk
What is haemoangioma
vascular tumours of the dermis, children, bluey red surface.
What are the melignant lesions?
BCC, Bowen’s disease, SCC, melanoma
What is BCC?
Basal cell carcinoma. Most common human cancer, slow growing, rarely metastasize. Sun exposed.
What is Bowen’s disease?
Precursor to SCC. Epidermal dysplasia. Sun damage.
What is SCC?
Squamous cell carcinoma. Second commonest skin tumour. Sun exposed. Older people.
What is melanoma?
Skin cancer. Common. Sun damage skin. Very aggressive and spread widely.
Melanoma ABCDE
Asymmetry, border, colour, diameter and enlarge
What are the mentioned inflammatory conditions?
Raches, psoriasis, scabies and meningitis
What are rashes?
Inflam skin reactions, eczema “to boil over”. Itching, burning, rash, blisters
What is psoriasis?
Elbows, knees, scalp and lubosacral area and glens penis. Salmon pink plaques with silver scaling.
What can psoriasis by associated with?
Nail changes, arthritis, myopathy, enteropathy and spondylic joint disease.
What is scabies?
Common, very itchy. Human scabies mites. Young and elderly. Skin to skin spread.
Where are scabies mites found?
Web spaces of fingers, palms, wrists, ankles and soles. Burrows are small greyish lines on skin
What conditions involve sin in systemic disease?
Meningitis, Systemic lupus erythematosus and internal malignancy
What are meningitis symptoms?
Unwell, headache, stiff neck, photopobia, aching limbs, cold hands and feed
What do people with meningococcal septicaemia develop?
rach of tiny pink prick spots -> devlop into purple bruising
