Derm Flashcards
Treatment of acne rosacea
- Brimonidine gel
- Topical ivermectin
- Topical ivermectin + oral doxycycline
Fungal nail infection treatment
- topical amorolfine
- Oral terbinafine
- Oral itraconazole
schistosomiasis treatment
Praziquantel
What condition can casue livido reticularis
SLE
recent viral illness following by herald patch
pityriasis rosea: self-limiting
rash seen in lyme disease + treatment
bulls eye (erythrema migrans)
oral doxy
What is erythema nodusum
painful red lesions, due to inflammation of the subcutaneous fat, commonly occurring in the shins.
what is pompholyx eczema
type of eczema which affects both the hands (cheiropompholyx) and the feet (pedopompholyx).
triggered by humidity
what is erythema marginatum
- annular erythematous macules or papules that spread outwards with central clearance
- not itchy or painful and may be asymptomatic.
skin manifestations of SLE
photosensitive ‘butterfly’ rash
discoid lupus
alopecia
livedo reticularis: net-like rash
BCC features
- rolled edges
- central depression
- pearly, flesh-coloured papule with telangiectasia
impetigo treatment
- hydrogen peroxide 1%
what can exacerbate plaque psoriasis
trauma
alcohol
drugs: beta blockers, lithium, antimalarials (chloroquine and hydroxychloroquine), NSAIDs and ACE inhibitors, infliximab
withdrawal of systemic steroids
most common site for venous ulceration
medial malleous
why are antivirals give in shingles
reduce post-hepatic neuralgia
Koebner phenomenon
lichan planus
treatment of lichen planus
potent topical steroids (topical clobetasone butyrate)
benzydamine mouthwash or spray is recommended for oral lichen planus
long term management of psoriasis
topical vitamin d analogue
urticaria treatment
- non-sedating antihistamine
- sedating antihistamine
- pred
molluscum contagiosum features
pink/pearly white papules with central umbilication
seborrhoeic dermatitis associations
otitis externa and blepharitis
shingles analgesia
- paracetamol and NSAIDs
- neuropathic agents (e.g. amitriptyline)
- oral corticosteroids
causes of erythema nodusum
NO - idiopathic
D - drugs (penicillin sulphonamides)
O - oral contraceptive/pregnancy
S - sarcoidosis/TB
U - ulcerative colitis/Crohn’s disease/Behçet’s disease
M - microbiology (streptococcus, mycoplasma, EBV and more)
scabies close contacts treatment
2 doses of permethin 1 week apart
herald patch followed by erythematous, oval, scaly patches
pityriasis roseace
prominent telangtascia in acne rosacea
laser therapy
how does pyoderma gangrenosum present
initially small red papule
later deep, red, necrotic ulcers with a violaceous border
spider naevi causes
liver disease
COCP
Pregnancy
erythema nodusum causes
infection
- streptococci
- tuberculosis
systemic disease
- sarcoidosis
- inflammatory bowel disease
- Behcet’s
- malignancy/lymphoma
drugs
- penicillins
- sulphonamides
- combined oral contraceptive pill
pregnancy
causative organism for pityriasis versicolour
Malassezia furfur
also causes seborrheic dermatitis
scabies features
widespread pruritus
linear burrows on the side of fingers, interdigital webs and flexor aspects of the wrist
which long term condition is associated with sebborhoeic dermatitis
HIV/Parkinsons
facial hirsutism treatment
Topical eflornithine
important questions in history for atopic dermatitis
Family history of atopy (asthma, eczema, allergic rhinitis, hay fever)
Personal history of other atopic disease
Sleep disturbance due to itch
Effect of previous treatment on patient
Aggravating and relieving factors
signs in atopic dermaitis
- flexure areas affected
- lichenification
- keratosis pilaris
psoriasis features
- well-demarcated, silver scale, salmon pink plaques
- extensor surfaces, scalp, torso
- Nail Changes → onycholysis, pitting
why are topic steroids not first line in psoriasis
Local → skin thinning, striae, easy bruising/fragility, ↑ risk of skin
infection, steroid acne
Systemic → adrenal suppression, Cushing’s Syndrome
Risk of developing unstable psoriasis with potent corticosteroids when treatment is stopped
what drug may dermatologist start for psoriasis
Drug → Methotrexate, Ciclosporin, Acitretin, Fumaric Acid
Side Effect → Pancytopenia/ Liver Cirrhosis
4 types of melanoma
- Superficial spreading (young people)
- Nodular (worst prognosis, bleeds/oozes)
- Lentigo maligna
- Acral lentiginous (nails, palms, soles)
lichen planus features
polygonal,
pruritic (itchy),
planar (flat-topped),
papular lesions
‘purple’
5 Ps
