DERMATOLOGY Flashcards
What bacteria causes acne?
Propionibacterium acnes in pilosebaceous duct
What is the treatment for mild acne vulgaris?
Topical retinoid- Tretinoin
Azelaic acid
What is the treatment for moderate acne?
Same as mild but add topical antibiotic
What is the treatment for severe acne?
Laser treatment
Where is eczema usually found?
On the face and surface of limbs
What is the treatment of eczema?
Keep nails short , scratch mittens
emollients
If severe- corticosteroids
What is the most common form of psoriasis?
Chronic plaque psoriasis
Nail signs of psoriasis?
Pitting, discolouration and onycholysis
Psoriasis treatment?
Emollient, topical corticosteroid and topical vit D
Servere- Phototherapy
methorexate
influximab
Where do arterial ulcers occur?
Toes, heel and ankle
Where do venous ulcers occur?
Medial gaiter region
What size are venous ulcers?
Large
What is ABPI?
Ankle brachial pressure index
How do we treat arterial ulcers?
Vascular recontruction
How do we treat venous ulcers?
Compression bandaging
What commonly causes cellulitis and erysipelas?
Strep pyogenes and staph aurues
How do we treat cellulitis?
Oral antibiotics- Flucloxacillin or clarithromycin
What causes necrotizing fasciitis>
Group A haemolytic strep
What is the most common skin cancer?
Basal cell carcinoma
What is basal cell carcinoma?
A slow growing cancer of the epidermal keratinocytes
What is a complication of basal cell carcinomas?
Local tissue destruction
What is squamous cell carcinoma?
A squamous cell tumour that invades the dermis
Slow growing and appears in sun damaged areas like the face, hand and trunk
How do squamous cell present?
Scaly and crusty
ill defined edges
may ulcerate
What are the signs of malignant melanoma?
Asymetrical shape Border irregular Colour irregular Diameter> 5cm Evolution/change of lesion
What type of hypersensitivity is contact dermatitis?
Type 4
