Most common conditions Flashcards
What are the features of venous ulceration?
these are formed by increased venous pressure causing damaged blood vessels
they present are dry and itchy skin and tend to be in the gaiter area
What are the features of arterial ulceration?
these tend to be around the feet
What is Type 4 hypersensitivity seen as in the skin?
allergic contact dermatitis
How does Type 1 hypersensitivity present in the skin?
urticaria which is itchy lesions and this is in an hour and is associated with non-pitting angioedema
What dose is in an epipen?
500micrograms and each patient is given two
What is hyperkeratosis?
increased thickness of keratin layer
What is acanthosis?
increased thickness of epidermis
What is parakeratosis?
persistance of nuclei in the keratin layer
What is papillomatosis?
irregular epithelial thickening
What is spongiosis?
oedema in the epidermis
What are the main reaction patterns of inflammatory skin diseases?
- spongiotic: intraepidermal oedema eg eczema
- psoriasiform: elongation of the rete ridges eg psoriasis
- lichenoid: basal layer damage eg lichen planus or lupus
- vesiculobullous: pemphigoid, pemphigus and dermatitis herpetifomis
What are the main blistering disorders or immunobullous disorders?
- pemphigus
- bullous pemphigoid
- dermatitis herpetiformis
What is seborrhoeic keratosis?
benign proliferation of epidermal keratinocytes
What do seborrhoeic keratoses look like?
stuck-on appearance with a greasy hyperkeratotic surface
What does an eruption of seborrhoeic keratoses suggest?
internal malignancy (Leser-Trelat sign)
What is a chronic leg ulcer?
open lesion between the knee and the ankle that remains unhealed for at least 4 weeks
What is lipodermatoscleroisis?
harder woody feel of skin- induration, inflammation and pigmentation of the skin
What is slough?
debris and dead skin that covers the ulcer and can be removed by compression
What is ideal ABPI?
0.8-1.3 is a normal ABPI with 1 being completely normal
What is 5% imiquimod cream used for?
common precancers
What are the layers of the scalp?
SCALP Skin Connective tissue Aponeurosis Loose connective tissue Periosteum
What are the - of punch biopsy?
- difficult to judge depth
- round holes don’t heal well
- sample may be too small
What is the treatment for actinic keratoses?
- topical 5% 5-fluorouracil treatment
- cryotherapy
What is Bowen’s disease?
intraepidermal carcinoma which is full thickness dysplasia of the keratinocytes within the dermis
What does scarlet fever present with?
- red cheeks
- rash
- strawberry tongue
What is the treatment for scarlet fever?
penicillin
What is the treatment for impetigo?
- fusidic acid cream (best for kids)
- flucloxacillin oral
How does hand, foot and mouth disease present?
papules on hands, buttocks, soles and in mouth
What drug can aggravate psoriasis?
beta blockers