Dermatology Flashcards
Dermatomyositis
- inflammatory disease of striated muscle
Dermatomyositis signs
- heliotrope rash( red/purple rash on eyelids)
-macular rash over the back and shoulders ( shawl sign)
-red papules over the knuckles( gottrons papules)
-
Antibodies for dermatomyositis
Anti-jo and anti- mi2
Erythema ab igne( fire)
Erythema due to heat damage. Common in elderly Hot water bottle rash Sitting in front of fire - explanation and avoidance of cause. It should resolve spontaneously
Venous leg ulcer with squamous cell carcinoma term
Marjolins ulcer
Ulcerated / crusted lesion - which skin cancer
Squamous cell carcinoma
Slowly growing red scaly plaque not managed with psoriasis mangement
Bowens disease
Secondary rash of syphillis presentation
Non itchy macular rash
Increasing erythema over chin, nose and cheeks with overlying pustules
Management of this condition
1) acne rosacea
2) 0.75 % metronidazole gel
Tinea capitis
Who gets it
Treatment
Investigation
More common in pre-pubertal boys - African American children
Treatment is with oral anti- fungals
Woods lamp
Farmer red macular papular ring with central clearing + flu like illness
- which rash
- which disease
- which organism
- erythema migrants
- Lyme disease
- borreliosis- bacteria
Eczema initial mangement
1% hydrocortisone cream
Seborrhoeic dermatitis
Presentation
Causative organism
Management
- red scaly rash - affects scalp, eyebrows, nasolabial folds, cheeks and flexures.- scaly patches
associated with dandruff
Organism- malassezia furfur
Rx- mild corticosteroid - antifungal preparations eg : daktacort( hydrocortisone 1% + miconazole 2% cream)
Hair loss, nose bleeds, sore lips and Dr mucous membranes - side effect of which drug
Oral retinoids
Well defined
Red plaques
Silvery scale on elbows and knees
Extensor surfaces
Psoriasis
Allergic contact dermatitis key
Type 4 hypersensitivity reaction, needs to be sensitised as opposed to irritant which happens after first exposure
Treatment for acne rosacea ( erythema with pustules)
Metronidazole gel
Mechanism of transmission - plantar warts from one person to another
Indirect physical contact ( swimming pools public showers)
trichotillomania
- inadvertent hair pulling
- increased periods of stress and anxiety
- GI disturbances
most common skin complaint in HIV +ve
Warts.
pityriasis rosacea
christmas tree disease, ring of scaling with a herald patch starts on a trunk, goes on a christmas tree pattern.
what happens to discoid lupus once it clears.
it leaves a hypopigmented/pigmented lesion.
tear drop like salmon pink papules covered in a fine scale. which condition
group A beta haemolytic streptococcal URTI#
associated with lithium, NSAIDs, antimalarials
guttate psoriasis.
management of acitinic keratosis
cryotherapy
topical 5-fluorouracil larger number of lesions
malignancy assoicateed rashes(3)
name, description , which cancer
- acanthosis nigricans
- florid cutaneous papillomatosis- eruption of pruritic papules- very disgusting-intrabdominal malignancy
- erythema gyratum repens- erythematous, circular, scaly lesions, associated with severe pruritis. - advances rapidly associated with TCC bladder- sybil
paraneoplastic pemphigus
-polymorphic skin eruption of erythema, papules, bullae and painful mucosal erosions.
B cell lymphoma- non hodgkins- poor prognosis.
niacin deficiency- name and triad
- pellagra
- dementia, diarrhoea, dermatitis
peeling paint syndrome
- dermatitis of carcinoid syndrome
which anti-malarial medication can cause increased photosensitivity
doxycycline
keratodermablenorrhagicum
- cobbletsone appearance hands/feet
- reactive arthritis manifestation
organism that causes scabies
sarcoptes cabiei
Severe itching , multiple papules on his feet and legs - continue to form a threadlike trail of red inflammation - diagnosis
Management
Cutaneous larva migrans hookworm ova found in cat or dog faeces
Topical bendazole
Rash associated with glucagonoma( hyperglycaemia, weight loss ,anaemia)
Necrolytic migratory erythema ( red blistering rash across legs)
Leser trelat sign
Explosive number of seborrhoeic keratosis lesions - sign of malignancy paraneoplastic syndrome
management of guttate psoriasis
Reassurance+ topical treatment if symptomatic
management of dermatitis herpetiformis(blistering skin disorder)
gluten free diet+ dapsone(antibiotic)
erythema multiforme
hypersensitivity reaction triggered by infections
target lesions
initially seen on the back of hands and feet before spread to torso
caused by viruses(HSV- most common cause), mycoplasma,drugs(penicillin, sulphonamides)
red, thickened skin on soles,crop of raised lesions
palmoplantar pustulosis
smelly feet, white skin over sole bilaterally, small holes seen on surface of affected skin
pitted keratolysis
telogen effluvium
loss and thinning of hair in response to stress
seborrhoeic dermatitis scalp management
-over the counter shampoo preparations-zinc pyrithione and tar
bullous pemphigoid
tense blistering lesions
very itchy
referral to dermatology
shiny pale, yellowish brown patches on shins(with telangiectasia), associated with diabetes
necrobiosis lipoidica
